JSS 1 BASIC SCIENCE – KnowledgeMerchant

14/9/2020
Subject; Basic science
Class;JSS1
Topic;General review

Morning students, how was your night?, the Correction for the previous work is stated below and today we will continue with our general review .
Correction
1)c
2)a
3)a
4)b
5)a
6)b
7)a
8)b
9)d
10)a

General review
1)There are majorly __ ovaries on either side of the abdominal cavity [a] 2 [b] 3 [c] 5 [d] 4

2)The enzyme produced in the stomach is called __ [a] ptyalin [b] rennin [c] lactose [d] amylase

3)The study of living things in their habitat is called __ [a] sociology [b]ecology [c] histology [d] meteorology
4)Which of these organism lives on land? [a] crocodile [b] monkey [c] shrimp [d] turtle

5)An example of nuclear chemical is _ [a] sugar [b] soap [c] uranium [d] dettol 6)The following organism possess lungs for gaseous exchange on land except [a] reptiles [b] birds [c] crabs [d] mammals 7)Which of these chemicals is used in preserving biological specimen in the laboratory [a] kerosene [b] formalin [c] diesel [d] petrol 8)The chemical added to water during purification process to kill germs is known as [a]chlorine b)coagulant c)choline d)disinfectants 9)The excretory organ of man is [a] Trachea [b] kidney [c] gill [d] booklungs
10)The respiratory organ of man is _ [a] skin [b] lungs [c] stomata [d] Nephindia

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7/9/2020
Subject; Basic science
Class;JSS1
Topic;General review

Morning students, how was your night?, the Correction for the previous work is stated below and today we will continue with our general review .
Correction
1)d
2)d
3)a
4)b
5)c
6)a
7)b
8)a
9)c
10)a
General review
1)The first element in the periodic table is ————-a)Ca b)Zn c)H d)N
2)The liquid part of the blood is —————-a)plasma b)cell c)water d)none
3)vitamins are majorly found in ————–a)fruits b)water c)beans d)milk
4)A balanced diet contain ————-classes of food a)5 b)6 c)8 d)2
5)Lack of calcium in children result to a)ricket b)osteoporosis c)scurvy d)clotting
6)Animals with backbone are a)invertebrate b)vertebrate c)pisces d)aves
7)The bacteria that involves the use of oxygen for their respiration is called (a) aerobic (b) anaerobic (c) facultative (d) minotative
8)_ causes dough to rise in bread making (a) fungi (b) yeast (c) bacteria (d) alcohol
9)The following are harmful effect of microbes except (a) death (b) spoilage (c) diseases (d) vaccination
10) One of the diseases caused by virus is (a) HIV (b) typhoid (c) tetanus (d)malaria

3/9/2020
Subject; Basic science
Class;JSS1
Topic;General review

Morning students, how was your night?, the Correction for the previous work is stated below and today we will continue with our general review .
Correction
1)b
2)c
3)a
4)b
5)a
6)d
7)c
8)b
9)a
10)b
General review
1)Spermatophyta is divided into angiosperm and ————–a)monocot b)thallophta c)dicot d)gymnosperm
2)The following are vertebrates except a)pisces b)amphibian c)aves d) lichen
3)cold blooded animal are a)homodant b)poikilothermic c)heterodant d)homoithermic
4)———- is secreted in the pancrease a)renin b)insulin c)glucose d)protein
5)Example of an organ is ————–phloem b)xylem c)kidney d)sclerechyma
6)The generic name of human being is a)homo saapien b)rattus rattus c)panther leo d)none
7)———— is not found in animal cell a)cell membrane b)cell wall c)nucleous d)centriole
8)———— is located in the chromosome a)DNA b)mitochondria c)plasma d)golgi body
9)———– help to fight against diseases and infection a)plasma b)platelet c)white blood cell red blood cell
10)————— does not have a specific shape a)amoeba b)coelenterates c)algae d)bacteria.

30/8/2020
Subject; Basic science
Class;JSS1
Topic;General review

Morning students, how was your night?, the Correction for the previous work is stated below and today we will continue with our general review .
Correction
1)a
2)c
3)a
4)b
5)a
6)d
7)b
8)a
9)c
10)b
General review

1)The following are not pollutant except a) coal b) urine c)wood d) fuel
2)The insect responsible for malaria is ——-a) housefly b) lice c) mosquito d) tick
3)A balanced diet contain_———–classes of food a) 6b) 5c) 4d) 8
4)Ricket is a deficiency of vitamin in children a) A b) DC) E d) B
5)A state of complete physical and mental well being is-——-a) health b) health care c) lifestyle d)rest
6)The following are refuse disposal method except a) landfill b) compositing c) incinerator d) well
7)The process of injecting vaccine in the body of a person is —-a) vaccination b) inoculation c) immunization d) pathology
8)A cut on the skin is called a) wound b) abrasion c) drowning d) pain
9)—— is a source of fat and oil a)cheese b)meat c)milk d)vegetables
10) Ability of the body to resist diseases is——a)vaccine b)immunity c)innoculation d)diseases

27/8/2020
Subject; Basic science
Class;JSS1
Topic;General review

Morning students, how was your night?, the Correction for the previous work is stated below and today we will continue with our general review .
Correction
1)d
2)a
3)a
4)b
5)b
6)b
7)b
8)d
9)b
10)a
General review

1)Example of a perennial crop is (a) (a) cocoa (b) yam (c) vegetables (d) okra
2)Example of animal that feed on flesh is (a) goat (b) cow (c) dog (d) ant
3)_ feed on dead & decaying plant and animal (a) scavengers (b) omnivores (c) carnivores (d) herbivores.
4)_ Use fins for locomotion. (a) insect (b) fish (c) human (d) snail
5)Deficiency of carbonhydrate result to ———–a)marasmus b)blindness c)infertility d)osteoporosis
6)The following are macronutrients except a)S b)C c)N d)Fe
7)We breath in oxygen and exhaled a)carbonmonoxide b)carbon iv oxide c)nitrogen d)chlorine
8)Regular exercise stops a)obesity b)good posture c)agility d)strong bone
9) Lack of vitamin A result to a)death b)scurvy c)poor vision d)infertility
10)—–help in proper healing of wound a)rice b)fruits c)cassava d)potato

23/8/2020
Subject; Basic science
Class;JSS1
Topic;General review

Morning students, how was your night?, the Correction for the previous work is stated below and today we will continue with our general review .
Correction
1)c
2)b
3)a
4)b
5)c
6)d
7)d
8)a
9)c
10)a
General review

1)The following are the categories of pollutants except —————–a)biological )chemical c)physical d)biochemical
2)Increase in the size and weight of organism is called a)growth )age c)fatness d)adult
3) The brain is responsible for ————a)reasoning )talking c)dancing d)eating

4)—————— is a place where living organism live a)house )habitat c)tree d)bush
5)one of the drug that can be abuse is ————-a)paracetamol )cocaine c)novagine d)lumatem
6)—————– is the superior of all animal a)plant )man c)microbes d)none
7)planting of tree is a way of controlling —————-a)soil pollution )flooding c)bush burning d)desertification
8)Terestial environment include the following except a)desert )forest c)grassland d)sea
9)solid waste is called a)sewage )refuse c)paper d)water
10)Example of animal in aquatic habitat is ——————a)fish )lion c)cat d)dog

20/8/2020
Subject; Basic science
Class;JSS1
Topic;General review

Morning students, how was your night?, the Correction for the previous work is stated below and today we will continue with our general review .
Correction
Sorry,there was an omission for question 1 and 2
3)d
4)a
5)d
6)d
7)d
8)b
9)a
10)a
General review

1)_ is responsible for decomposition of organic matter [a] earthworm [b] fungi [c] bacteria [d] virus 2)The study of living things in their habitat is called _ [a] sociology [b]ecology [c] histology [d] meteo

3)The digestion of carbohydrate starts for the _ [a] mouth [b] stomach [c] liver [d] duodenum 4)Protein is broken down into [a] glucose [b] Amino acid [c] peptase [d] lactic acid
5)The removal of undigested food from the body is called _ [a] digestion [b] ingestion [c] egestion [d] absorption 6)The following are excretory products except [a] urea [b] water [c] uric acid [d] oxygen 7)The following are organs of excretion except [a] skin [b] lungs c)kidney [d] pancreasa 8)The developing baby in the womb is called [a] foetus [b] follicle [c] ovary [d] zygote
9) is used to clean a water closet [a] alcohol [b] herbicioles [c] harpic [d] kerosene
10)__ is a non-metal [b] carbon [b] iron [c] magnesium [d] zinc

17/8/2020
Subject; Basic science
Class;JSS1
Topic;General review

Morning students, how was your night? Hope you are keeping safe, the Correction for the previous work is stated below and today we will continue with our general review .
Correction
1)a
2)b
3)b
4)b
5)c
6)c
7)a
8)c
9)c
10)a
General review

3)The study of plant is called [a] biology [b] astronomy [c] lithosphere [d] botany
4)The study of animal is [a] zoology [b] geology[c] anatomy [d] revolution
5)Deficiency of vitamin k result to [a]beriberi [b]scurvy[c]infertility[d]hemorrhage
6)STIs are caused by the following except [a] bacteria [b] virus [c] fungi [d] annelids
7)The following are sexually transmitted infection except [a] Gonorrhea [b] syphilis [c)herpes d)Typhoid
8)one of these is an air borne disease______ [a]tetanus [b]tuberculosisc [c]typhoid [d] malaria
9)_ is a water borne disease [a] dysentery [b]cough [c]anaemia[d] fever
10)_______is the liquid portion of the blood[a] plasma [b] platelet [c] white blood cell [d] red blood cell

13/8/2020
Subject; Basic science
Class;JSS1
Topic;General review

Morning students, how was your night? Hope you are keeping safe, the Correction for the previous work is stated below and today we will continue with our general review .
Correction
1)d
2)c
3)a
4)c
5)c
6)d
7)a
8)d
9)b
10)b
General review

1)Deficiency of carbohydrate result to [a] kwashiorkor [b] marasmus [c] blindness [d] infertility
2)Which of these is a multicellular animal [a] Amoeba [b] man [c] trypanosome [d] paramecium
3)Another name for egg is [a] womb [b] ova [c] zygote[d] vagina
4)ricket is a deficiency of vitamin [a] A [b)D [c] E [d]B
5)The pregnancy stage to delivery period is called______[a] ovulation [b] zygote [c] gestation [d] reproduction
6)The shedding of an unfertilized egg and the uterine wall is the time of [a] hygiene [b] cycle [c] menstruation [d] fertilization
7)Animals with backbone are called [a] vertebrates [b] invertebrates[c] amphibians [d] Pisces
8)Ability of an organism to take in oxygen and release carbon iv oxide is called [a] growth [b] irritability [c] respiration [d] competition
9)The following are non-metals except [a] iodine [b] chlorine [c]iron [d] carbon
10)Example of a carnivore is [a] dog [b] goat[c] insect [d] sheep

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10/8/2020
Subject; Basic science
Class;JSS1
Topic;General review

Morning students, how was your weekend? Hope you are keeping safe, the Correction for the previous work is stated below and today we will continue with our general review .
Correction
1)c
2)a
3)d
4)b
5)d
6)d
7)b
8)a
9)d
10)C

The following are examples of an element except [a] H2 [b] N2 [c] 02 [d] CO2
2)The following are domestic animals except [a] Hen [b] dog [c] lion [d] turkey
3)Animals that feed on both plant and animals are called [a] omnivores [b] carnivores [c] herbivores [d] cavengers
4)The respiratory organ of plant is [a] lungs [b] kidney [c] stomata [d] liver
5) use wings and legs to move [a] fish [b] snail [c] insects [d] man
6)The following are sense organs except [a] ear [b] skin [c] tongue [d] liver
7) feed on plants only [a] sheep [b] dog [c] lion [d] leopard
8)The following are metals except [a] iron [b] lead [c] magnesium [d] chlorine
9)An organism that carry microbes which transmit infection is called [a] filarial [b] vector [c] bacteria [d] diseases
10)Sleeping sickness is caused by_______ [a] blackfly [b] tse-tse fly [c] culex mosquito [d] Aedes

6/8/2020
Subject; Basic science
Class;JSS1
Topic;General review

1)Diseases causing organism can be passed from one person to another through [a] water [b] food [c] body contact [d] All of the above
2)Which of these is a unicellular animal [a] Amoeba [b] man [c] amphibians [d] toad
3)Another name for uterus is [a] womb [b] oviduct [c] egg [d] vagina
4)Conception occur in the [a] oviduct [b] uterus [c] vagina [d] fallopian tube
5)The fusion of male and female gamete result to [a] ovulation [b] zygote [c] gestation [d] reproduction
6)The shedding of an unfertilized egg and the uterine wall is the time of [a] hygiene [b] cycle [c] menstruation [d] fertilization
7)Animals without backbone are called [a] vertebrates [b] invertebrates[c] amphibians [d] Pisces
8)Ability of an organism to respond to stimuli is called [a] growth [b] irritability [c] adapted [d] competition
9)The following are non-living things except [a] table [b] chair [c] good [d] knife
10)Example of a scavenger is [a] elephant [b] hyena [c] lion [d] good

3/8/2020
Subject; Basic science
Class;JSS1
Topic;General review

1)Example of food that contain fat and oil is a) melon b) rice c) yam d) potato
2)____is the ability to do work a) energy b) work c) power d) newton
3)protein is broken down into a) amino acid b) glucose c) glycogen d) fats
4)Iron is found in ____a) plaintain b) yam c) meat d) fish
5)Tetanus is gotten from a) dirty wound b) air c) mosquito bite d) feaces
6)The following are parasites except a) lice b) fleas c) bugs d) flu
7)The following are sources of protein except a) meat b) fish c) oil d) beans
8)Teeth are meant to be washed ____time in a day a) 2 b) 1 c) 3 d) 4
9)sweat is produced from the a) skin b) liver c) kidney d) mouth
10)——is a source of vitamin a)cocoyam b)potato c)fruits d)egg

30/7/2020
Subject; Basic science
Class;JSS1
Topic;General review

1)One complete revolution takes place in _day [a] 366 [b]365 [c] 388 [d] 364 2)There are 4 seasons which are winter, spring autumn and _ [a] summer [b] fall [c] inner [d] orbit
3)The study of the universe is called [a] biology [b] astronomy [c] lithosphere [d] botany
4)The solar system is made up of plants [a] 8 [b] 3 [c] 7 [d] 10
5)One complete rotation takes hrs [a] 48 [b] 24 [c] 12 [d]
6)STIs are caused by the following except [a] bacteria [b] virus [c] fungi [d] annelids
7)The following are sexually transmitted infection except [a] Gonorrhea [b] syphilis [c] Herpes [d] Typhoid
8)Most sexually transmitted infections are treated with prescribed [a] penicillin [b] antibiotic [c] serum [d] glucose
9) is responsible for earth degradation [a] animal [b] man [c] plant [d] non-living things
10) protect the body from disease and infections [a] plasma [b] platelet [c] white blood cell [d] red blood cell

27/7/2020
Subject; Basic science
Class;JSS1
Topic;General review

Morning students, how was your weekend? Hope you are keeping safe, the Correction for the previous work is stated below and today we will star with general review .

Correction
Examples of organisms that belongs to reptiles are
1)snake
2)lizard
Examples of organisms that belongs to amphibians are
1)toad
2)frog

General review

1)The method of injecting a healthy person with a mild of dead form of a germ so that the body may develop a resistance is called [a] vaccination [b] immunization [c] drug abuse[d] health hazard

2)Examples of plant are the following except [a] Trees [b] flowers [c] Herbs [d] worms

3)The removal of waste product from the body is called [a] respiration [b] excretion [c] growth [d] competition

4)__ is found only in plant cell [a] vacuole [b] chloroplast [c] mitochondria [d] nucleus

5)The following are the vertebrates except [a] pisces [b] Amphibians [c] Reptiles [d] mollusca

6)Matter is anything that has _ and occupy space [a] energy [b] strength [c] mass [d] life

7)The 3 major states of matter are solid, liquid and _ [a] ice [b] gas [c] oil [d] element

8)The following are examples of a mixture except [a] sand [b] blood [c] air [d] water

9)_ can be classified as metals and non-metal [a] living things [b] non-living things [c] flowering plant [d] cell

10)The earth rotates on its _ [a] equator [b] axis [c] plane [d] sun

23/7/2020
Subject; Basic science
Class:J.S.S.1
Topic; Classification of animals

Morning students, how was your night? the correction for the previous assignment is stated below and todays topic is classification of animal.
Correction

1)monocotyledons;it has one seed leave and stem,fibrous root e.g maize,Guinea corn

2)Dicotyledons:it has two seed leaves,tap root e.g Beans,pride of Barbados.

Classification of animal
It is divided into 2major groups

1)invertebrates; animals without back bone
They are;
A)protozoan e.g amoeba,plasmodium
B)coelenterates: hydra, coral
C)platyhelminthes e.g fluke,planaria
D)Nematodes e.g round worm,Guinea worm
E)Annelids e.g earthworm
F)molluscs e.g snails,octopus
G)Echinodermata e.g star fish
H)Arthropods e.g scorpion, spider,cockroach, grasshopper e.t.c

2)vertebrates :They are animal with back bone
They are:
A)Pisces e.g fish,
B)Amphibians
C)Reptiles
D)Aves e.g hen,duck
E)mammals e.g man

Question
Give 2 examples of organisms that belongs to reptile and amphibian group .

20/7/2020
Subject; Basic science
Class:J.S.S.1
Topic; Classification of plants (continuation)

Morning students, how was your weekend? the correction for the previous assignment is stated below and todays topic is classification of plant.(continuation)
Correction

Uses of plant
1)For medicinal purpose e.g( dongoyaro) to treat malaria
2)For furniture making e.gwardrobe,shelves,kitchen cabinet e.t.c
3)As food e.g vegetables
4)For building e.g roofing of a house.

Classification of plants
1)schizophyta; They are unicellular animals with no nucleus, not green plant e.g bacteria
2)Thallophyta ;No roots, stems and leave. It is divided into 2
A)algae;it is green,blue green or golden green e.g Spirogyra, chlamydomonas
B)Fungi ;non green plants that feed on dead organic matter,it could be parasitic e.g mucor,mushrooms
3)Bryophyta: non flowering plant,no root ,stems and leaves e.g mosses,liverwort
4)pteridophyta: non flowering plant, no seeds and fruits, mainly terrestrial but some are aquatic e.g fern
5)spermatophyta:green plants with seeds,it is divided into 2
1)Gymnosperm; it does not produce flower,it produces seed and cones e.g conifers
2)Angiosperm: it produces flowers,true root,leave and stem.it is divided into 2
Mocotyledon and dicotyledon
Questions
Differentiate between monocotyledon and dicotyledon with 2examples of crops that belong to each group

16/7/2020
Subject; Basic science
Class:J.S.S.1
Topic; Classification of plants (introduction)

Morning students, how was your night? the correction for the previous assignment is stated below and todays topic is classification of plant.
Correction
1)Effluent discharge :liquid waste or sewage discharged into a river or sea
2)Influent discharge:Liquid waste or sewage that flows out of a river or sea into a particular reservoir or basin.
3)Refuse are solid waste e.g used paper or tissue, food scrap,animal waste(dungs) e.t.c
4)sewage are liquid waste e.g urine,bathed water e.t.c

Classification of plants
Plants are numerous and are different in nature.Because of this, it is grouped into the following groups. With this ,it is easy to identify and recognize each plants

1)Schizophyta
2)Thallophyta
2a)Algae
2b)Fungi
3)Bryophyta
4)pteridophyta
5)Spermatophyta
5a)Gymnosperm
5b)Angiosperm
5bi)Monocotyledons
5bii)Dicotyledons
We will discuss better on the various classes of plants next class.Enjoy the rest of the week and continue to keep safe.

Question
1)State 4 uses of plant

13/7/2020
Subject; Basic science
Topic:Water pollution
Sub topics:
-The meaning of water pollution
-Types of water pollutants
-Effects ofwater pollution
Control of water pollution

Morning students, how was your night? the correction for the previous assignment is stated below and the topic for today is water pollution.
Correction
1)Biodegradable materials are substances that are easily decomposed by micro organisms
Examples include: plant and animal wastes,food scraps, paper e.t.c

2)Non Biodegradable materials are substances that cannot be decomposed by the help of microorganisms .
Examples include; plastic, rubber, metals,Nylon,glass e.t.c

Water pollution
It is the contamination of water as a result of indiscriminate dumping of harmful substance into the water.

Water pollutants
1)Oil spillage
2)Industrial waste
3)Sewage
4)Domestic waste
5)Chemicals e.g Gamalin 20
6)Agricultural waste.

Effects of water pollution
1)It kills the living creatures in the water
2)It causes diseases like diarrhoea and cholera
3)It makes the water unfit for drinking
4)It becomes harmful for microorganisms
5)It leads to rapid growth of vegetation

Control of water pollution
1)Oil spillage must be prevented
2)Use of chemical for fishing should be discouraged and prohibited
3)Dumping of refuse into water should be prohibited
4)Industrial and other wastes should not be dumped in water
5)There should be proper sewage disposal.

Questions
1)Explain the following
A)Effluent discharge
B)Influent discharge
C)Refuse
D)Sewage

9/7/2020
Subject; Basic science
Topic;soil pollution
Sub topics:
-The meaning of soil pollution
-Types of soil pollution
-Effects of soil pollution
Control of soil pollution

Morning students, how was your night? the correction for the previous assignment is stated below and the topic for today is soil pollution.
Correction
3 effects of air pollution
1)it irritates the eye
2)It reduces the visibility of man
3)It corrodes metal

2)Smog
It is an air pollutant consist of smoke and fog which result from large amount of coal burning.

Soil pollution
It is the indiscriminate dumping of waste substances on the soil

Types of soil pollution
1)Agricultural pollutants e.g plants,animals, agricultural chemicals
2)Chemical pollutants e.g crude oil and its products,lead,dust
3)Non biodegradable pollutants e.g polythene, bags,plastics, rubber, glasses, metals

Effects of soil pollution
1)It leads to death of living things
2)It causes reduction on the nutrient value of soil and food
3)It causes poor plant yield
4)It wastes land meant for agricultural purpose
5)It aids the spread of diseases like cholera, typhoid fever.

Control of soil pollution
1)Laws should be passed across to people concerning the right use of soil
2)Environmental sanitation should be promoted
3)Non biodegradable materials should be recycled
4)Refuse and sewage should be properly disposed
5)Campaign and enlightenment on the use of land

Questions
1)Differentiate between biodegradable and non biodegradable materials
2)State 3 examples each

6/7/2020
Subject; Basic science
Topic;pollution (continuation)
Sub topics:
-Causes of air pollution
-Effects of air pollution

-Control of air pollution

Morning students, how was your weekend?please, let us continue to keep safe ,the correction for the previous assignment is stated below and the topic for today is pollution.(continuation).

Correction
1)Examples of pollutants gotten from smoke
A)Exhaust from vehicles
B)Burning of natural gas and other organic components
C)Burning of wood

2)From carbon (iv)oxide.
A)coal
B)Decaying of substances
C)Hydrocarbons

Causes of air pollution
1)Burning of fuels
2)Exhaust from vehicles
3)Burning of wood
4)Smokes from industries and factories
5)Volcanic eruption e.t.c.

Effects of air pollution
1)It reduces oxygen carrying capacity of the red blood cell
2)It kills due to suffocation
3)It damages breathing organs
4)It is poisonous to plants and animal e.t.c

Control of air pollution
1)Industries and factories should be sited far away from people
2)people should be enlightened about the air pollutant
3)Penalty should be given to people for causing air pollution
4)Construction of chimneys to allow smoke to pass out freely into the air
5)The use of silent generator as a source of energy to reduce noise

Question
1)List 3 other effects of air pollution
2)what is the meaning of smog?

2/7/2020
Subject; Basic science
Topic;pollution ( introduction)
Sub topics:

-The meaning of pollution
-Types of pollution
-Air pollution
-Examples of air pollution
Morning students, how was your night? and happy new month,the correction for the previous assignment is stated below and the topic for today is pollution.
Correction
1)4 ways to reduce friction
A)use of lubricant
B)polishing
C)Galvanizing
D)use of ball and roller.

2)mass =5kg
Height=5m
Gravity =10m/s2
Potential energy (P.E)= mgh
P.E=5×5×10
P.E=250joules.

Pollution
The discharge of waste substances in quantities that are harmful to human beings and other living things is called pollution.
Substances that pollute or contaminate the environment is called pollutant.

Types of pollution
1)Air pollution
2)water pollution
3)soil pollution
4)Noise pollution

Air pollution
It is the discharge of waste substances into the air in quantities that makes the air harmful.

Examples of air pollution
1)smoke
2)carbon iv oxide
3)Dust
4)smog
5)Sulphur (iv) oxide
6)carbon (ii)oxide e.t.c.

Question
1)State 3 examples of pollutants gotten from smoke and carbon iv oxide.

29/6/2020
Subject; Basic science
Topic;Friction
Sub topics:

– The meaning of friction
-Types of friction
-Advantages of friction
_Disadvantages of friction
Morning students, how was your weekend?the correction on the previous assignment is stated below and the topic for today is friction.

Correction
1)F =ma
Where m=25kg ,a=10m/s2
F= ma
F= 25×10
F=250N
2)where m=500kg ,a=9.8m/s2
F=ma
F=500×9.8
F=4900N

-Friction
It is a force that opposes relative motion between two surfaces in contact

-Types of friction
1)Static friction
2)Dynamic friction

-Advantages of friction
1)It helps in walking
2)It helps in grinding
3)It enables nail to join two pieces of wood together
4) It enables you to hold pen
5) It is used in automobile brake

-Disadvantages of friction
1)It causes wearing and tearing of engine
2)It reduces the efficiency of the machine
3)It causes wearing of tyre thread and the soles of our shoes.

-Question
1)List 4 ways to reduce friction
2)A body of mass 5kg fell from the top of a house of height 5m.calculate the potential energy of the body.

25/6/2020
Subject; Basic science
Topic;Force (conclusion)
Sub topics:
;-Newtons law
-Types of non contact forces
-Frictional force.
Morning students, how was your night?the correction on the previous assignment is stated below and the concluding part of the last topic(force) is discussed below.

Correction
1)Gravitational force; It is the force of attraction between any two bodies in the universe. It is the force that keeps the bodies near the earth surface close to it.

2)Magnetic force;It is the force of repelling or attracting between a magnetic material.

-Newtons law
Newton was a very famous physicist,due to his studies, we knew much about various forces and motion today.
-Newton’s first law of motion
It States that every object persist in its state of rest or uniform motion in a straight line unless it is compelled to change that state by forces impressed on it.

-Newton’s second law of motion
It States that the acceleration of an object is directly proportional to the mass of the object (F=ma) where m is mass in kilogram and a is acceleration in m/s2.

-Newton’s third law of motion
It States that every action has equal and opposite reaction.

-Types of non contact force
1)Electric force; The region around an electric charge in which an electric force is exerted on another charge.
2)magnetic force; The repelling or attracting force between a magnet and a magnetic material
3)Gravitational force; The force of attraction between any two bodies in the universe.
We also have frictional force
It is the force that resist sliding or rolling of be solid object over another.

Questions
1)Calculate the force use to move an object with a mass of 25kg and the acceleration due to gravity is 10m/s2.
2)A moving vehicle with a load of mass 500kg move with an acceleration due to gravity of 9.8m/s2.calculate the force.

22/6/2020
Subject; Basic science
Topic;Force (Introduction)
Sub topics;
-What is force?
-Types of force
-Contact force
-Non contact force

Morning students, how was your weekend? Today’s topic is Force but the correction on the previous assignment is stated below.

1)Mass is the amount of matter in an object, it is measured in kilogram while weight is the force exerted on an object due to gravity. It is measured in newton.
2)Applications of gravity
A)It maintains the force of attraction between planets so that they move around the sun in their respective orbits
B)Body with greater mass shows more attraction than object with less mass.

What is force?
It is either a push or pull upon an object resulting from the object interaction.It is the product of mass and acceleration ,it is measured in newton.
Types of force
1)Contact force
2)Non contact force
Contact force
It is a force between two objects that are in contact with each other. Examples are
1)push or pull
2)Forces of friction
3)Tension
4)Squeezing water out of a wet cloth.

Non contact force
It is a force applied to an object by another body that is not in direct contact with it.
Examples are;Electrical force, magnetic force, gravitational force. e.t.c

Question
Differentiate between magnetic and gravitational force

8/6/2020
Subject; Basic science
Topic; satellite
Sub topic;
-The meaning of satellite
-Chronical order of satellites of some countries.
-Uses of satellite
Morning students, How was your weekend? hope you are enjoying the holiday?,The topic for today is Satellite, but the corrections on the previous assignment is stated below.

Corrections on the previous assignment
1)Benefits of space travel
A)For collection of scientific information about the earth and the rest of the universe
B)production of new technology for computers
C)Building of newer and better telecommunication devices
D)Development of remote sensing equipment that guide aircrafts and spacecrafts

2a)Life support in relation to space travel is a group of devices that allows human being to survive in outer space, it supplies air,water,food and correct body temperature and pressure and deal with the body waste products.
While
2b)Radiation is the emission or transmission of energy in form of waves or particles through the space or material medium,solar and cosmic radiation can easily result to health problems, but orbital space stations and spaceships are protected against radiation.but in case of unexpected spurt of solar activity, the spaceship crew may take special medicines which increase the resistance of the human body to the effect of cosmic radiation.

-The meaning of satellite
A satellite is an object that revolve around the planet on a fixed, elliptical path,it can either be natural or artificial, it travels too slowly through space and there is a danger that it will fall back to the earth, a process called (decaying orbit).

Chronical order of satellites of some countries

1)
Soviet Union
1957
Sputnik 1

2)
USA
1958
Explorer 1

3)
United kingdom
1962
Ariel1

4)
Canada
1962
Alloutte 1

5)
Italy
1964
San marco 1

6)
France
1965
Asterix

7)
Australia
1967
Wresat

Note;The first launched satellite began in 1957 with soviet union (Russia) called sputnik 1,there are other satellites aside those stated above.

Uses of satellite
1For space tourism
2)Space observations
3)Earth observation
4)Satellite communication. e.t.c

Questions
1)What is the full meaning of GIS and GPS?
)State their functions.

4/6/2020
Subject; Basic science
Topic; space travel
Sub topic; –
-The meaning of space travel
-Reasons for space travel
-Dangers of space travel
-Benefit of space travel
Hello students, how was your night ?hope you are enjoying the holiday?The topic for today is space travel, but the correction for the previous assignment is stated below.

Corrections on the previous assignment
A)Uses of metals
1)For transportation e.gcars,buses,train e.t.c
2)For construction of buildings e.g steel
3)Farming e.g tractor,planters
4)Computers and electronic devices that require conductors e.g Television,radio,stereos
5)For household equipments e.g ovens ,utensils, dish,blender e.t.c

B)Uses of non metals
1)For battery production e.gcarbon in its purest form
2)For respiration e.g oxygen
3)For purification of water e.g chlorine
4)For production of protein in the body e.g Nitrogen
5)For medical purpose e.g sulphur
Classification of elements
A)Alkali metals
B)Alkali earth metals
C)Transition metals
D)metalloids
E)Non metals
F)Halogens
G)Rare or noble gas

Space travel
It is the travelling of spacecraft into and through outer space

Reasons for space travel
1)Space tourism
2)Satellite communication
3)Space observatories
4)Earth observation satellite
5)To explore the universe

Dangers of space travel
1)Space debris
2)Solar and cosmic radiation
3)Extreme temperature
4)Missions and hardware

Questions
1)List 4 benefits of space travel
2)Differentiate between life support and radiation

Note;make sure all notes are written in your book

No Fields Found.

1/6/2020

Subject; Basic science

Topic;Non living things

Sub topic;

-What are non living things

-Classification of non living things

-Major differences between metal and non metal

Morning students, how was your weekend? I believe you are keeping safe,the topic for today is non living things, but before I start, the corrections for the previous assignment is stated below

Corrections on the previous assignment

1)A drug is a substance used by people when the body starts malfunctioning in any way,which help to restore normalcy or give comfort to a diseased person.

2)uses of drug

A)As painkillers

B)As supplement in the diet

C)To kill germs and diseases causing organisms

3) causes of drug abuse

A)Youthful exuberance

B)Excitement

C)Curiousity

D)shy behaviour

E)Poor social coping skills

F)Inability to cope with stress and frustration

-What are Non living things?

They are things without life e.g paper Biro,chair iron,stove bed et.c

Classes of non living things

A)Metals

B)Non metals

Characteristics of metals

A)They are good conductors of heat and electricity

B)They are ductile e.g can be drawn into wires

C)They are malleable l.e can be hammered and sheet can be made from them

D)They are hard and can’t be cut with knife e.t.c

Characteristics of non metals

A)They are poor conductor of heat

B)They are not shiny and do not have lustre

C)They are brittle and cannot be drawn into sheet

D)They are electronegative in character

Difference Between Metals and Non-metals

:1)The natural elements that are hard, shiny, opaque and dense are metals. The chemical substances that are soft, non-shiny, transparent and brittle, are non-metals.

2)Metals are electropositive in nature as they easily lose electrons, so they are reducing agents. On the contrary, Non-metals are electronegative because they gain electrons and thus they are oxidising agents.

3)Metals have a crystalline structure, whereas non-metals possess amorphic structure.

At room temperature, metals are usually solid, except mercury and gallium which are in the liquid state. Conversely, non-metals can be found in solid or gaseous form, except Bromine which is the only non-metal that is present in liquid form.

4)Density is the ratio of mass to volume; metals have a higher density as compared to non-metals.

5)Metals look smooth and shiny, while non-metals usually appear dull.

6)When it comes to hardness, metals are generally hard substance, but it varies from substance to substance. Unlike non-metals is soft substance except diamond, which is the hardest substance on earth.

7)Malleability is the characteristic of metals, to be converted to the thin sheet when beaten by a hammer. As against this, non-metals are brittle, as on beating with the hammer, non-metals are broken down into pieces.

8)Ductility is the property of metals, to be drawn into wires, but non-metals do not possess such property.

9)Sonorous is the feature of metals of producing a deep or ringing sound. However, non-metals are non-sonorous.

10Metals support conduction of heat and electricity. Conversely, non-metals are insulators, and so they do not support conduction of heat and electricity.

11)Metals have a very high melting and boiling point. In contrast, non-metals are boiled and melted at a relatively low temperature.

12)In the outer shell, metals consist of 1 to 3 electrons, whereas non-metals consist of 4 to 8 electrons.

14)Metals react with oxygen to form metal oxides, which are basic in nature, so they have electrovalent or ionic bonds. On the flip side, when non-metals react with oxygen to form non-metal oxides of acidic nature and thus, they have covalent bonds.

15)Metals react with dilute acid, to produce salt and hydrogen gas. As opposed, non-metals do not usually react with dilute acid.

Questions

1)List 5 uses of

A)metal

B)non metals

2)List the8 classes of metals

No Fields Found.

28/5/2020

Subject: Basic science

Topic: Drug abuse

Sub topics:

-The meaning of drug abuse

-Drug addiction, Drug misuse ,Drug peddlers

–classification of drugs

– Examples of drugs that can easily be abused

-causes of drug abuse

Good morning students, how are you?, I believe you are enjoying the holiday, I will like to revise the topic; Drug abuse

-Drug abuse

It is an act of taking drug without doctor’s prescription.

–Drug addiction

It is the process of being used to a particular products or drug.i.e substance dependence which could lead to social, financial and economic problems.

-Drug misuse

It is the process of taking drugs for the purpose that is not meant for

-Drug peddler

They are people that hawk drugs or sell drugs on the road, market or in the bus

Classification of drugs

1) Narcotics

2) Sedatives

3) Hallucinogens

4) Tranquilizers

5) Stimulants

Examples of drugs that can easily be abused

1) Alcohol

2) Tobacco

3) Nicotine

4) Marijuana

5) Cocaine e.t.c

Causes of drug abuse

1) Lack of parental care

2) Peer influence

3) Poor academic performance e.t.c

QUESTIONS:

1) What is a drug?

2) State the various uses of drug

3) List 5 other causes of drug abuse.

No Fields Found.

correction of the previous classwork

1)ORS ; It is known as oral rehydration salt

1b) It is used when there is loss of fluid in the body

2a)specific causautive agents of water borne diseases

a)cholera (Vibrio choleerae)

b)Typhoid (Salmonella typhi)

c)Hepatitis (HsV I AND HSV 2 Virus)

d)Diarrhoea (salmonella,norovirus)

d)Dysentry (Amoebic dysentry)

25 – 05 – 20

LESSON TWO

REVISION QUESTIONS ON WATER – BORNE DISEASE

Water- borne diseases are diseases that are spread through water.

Answer the following questions:

1.Mention five properties of water(clean water).

2.List 3 sources of clean water in your area.

3.Mention 4 water treatment process.

4.State the main causative agent of the following water-borne diseases. a.Cholera b.Dysentry c.Typhoid d.Diarrhoea

No Fields Found.

Hello my students, hope you have been enjoying your holiday,i will like to revise on the topic ;Living Things.

what are living things?

Living things are things that have life and can carry out all life processes .i.e characteristics of living things

Can you mention some of these life processes? i.e MR NIGER D

Classes of living things

They are; Plants and Animals

Examples of plants are;Hibiscus plants,cassava plants,mango tree,grasses e.t.c

Examples of animals are;Goat,housefly,human being,hen,rat.e.t.c

Can you still remember some of the differences between plant and animal?.They are;

-Plants are autotrophs i.e they can produce their food by themselves due to the presence of chlorophyll while animals are heterotrophs i.e they can not produce their own food but depend directly or indirectly on plants for their food.

-Plants respond slowly to stimulus while animals respond quickly to stimulus.

I believe you can still remember more

Plant and animal cell

what is a cell?

A cell is the structural and functional unit of life. It is the basic unit of life,it is the building block of all living things.

QUESTIONS

what are the major differences between plants and animals?
state five differences between plant cell and animal cell
NOTE; Make sure you put the subject name inside the box provided for answer

No Fields Found.

18/5/2020

subject; Basic science

Topic;Water borne diseases

Sub-topic;

-The meaning of water borne diseases

-Various types of water borne diseases and causative agent

-Various water treatment processes

-Good morning students, hope you are enjoying the holiday?I will like to revise the topic ;water borne diseases

-The meaning of water Borne diseases?

Water borne diseases are diseases caused by drinking contaminated water or gotten from human and animal feaces which contain pathogenic microorganisms.

l believed u can still remember the various types of water borne diseases and the causative agent which are;

A)Hepatitis (virus)

B)Dysentery ( protozoan)

C)Diarrhoea (Bacteria)

D)Typhoid (Bacteria)

E)Cholera (Bacteria)

Let me quickly remind you about the

– various water treatment processes.

A)Filtration; An act of removing dirt’s in form of objects in order to make it fit for use

B)Flocculation; The use of alum to treat water in which tiny particles is suspended in water and stick together thereby sink to the bottom of the water leaving the clear water above the sediment.

C)The use of chlorine to kill germs and make water fit for drinking

D)The use of sand beds to remove any sediments that might be present in water

E)Ultraviolet light can also be used to kill germs

F)Reverse osmosis can be used to remove sediments,salts and germs from water

-Questions

1)what is the full meaning of ORS?When is it used?

2)state the specific causative agent of each of the water borne diseases stated above.

Note;Make sure you put your subject name in the box provided for the answer

No Fields Found.

correction of the previous classwork

1)ORS ; It is known as oral rehydration salt

1b) It is used when there is loss of fluid in the body

2a)specific causautive agents of water borne diseases

a)cholera (Vibrio choleerae)

b)Typhoid (Salmonella typhi)

c)Hepatitis (HsV I AND HSV 2 Virus)

d)Diarrhoea (salmonella,norovirus)

d)Dysentry (Amoebic dysentry)