JSS 3 BASIC SCIENCE – KnowledgeMerchant

6/8/2020
Subject; Basic science
Class;JSS3
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)D
3)B
4)A
5)A
6)c
7)A
8)D
9)c
10)B
1)Which of these vectors transmit river blindness
[A] Tsetsefly [B] Blackfly [C] Anopheles mosquito [D] male ticks

2)The outer part of the skin is the [A]dermis
[B] Dentine [C] Pulp [D] epidermis

3)lipase are enzymes that act on [A] Proteins [B] lipids[C] carbohydrate [D] milk

4)High fat level in the body is known as [A] obesity [B] High blood pressure [C] Hypertension
[D] Hyperglycemia

5)The bacterium that causes dysentry is [A] plasmodium malaria [B] Treponema pallidum
[C] Neisserra gonorrhea [D] mycobacterium dysenterae

6) All of these are mixtures except [A] H2O [B] urine [C]sand[D]air
7)The simplest unit of a substance that can exist separately is [A] Atom [B] ion [C] molecule
[D] Element

8)All are non metals except [A] carbon [B] sodium [C] chlorine[D]iodine

9)The separation technique suitable for seperating petroleum into its components is [A] Distillation [B] Fractional distillation [C] Desecration [D] picking

10)The father of genetics is [A] Charles Darwin [B] John Dalton [C]Gregory mendel
[D] Michael faraday

3/8/2020
Subject; Basic science
Class;JSS3
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)A
4)D
5)B
6)D
7)C
8)A
9)B
10)C
11)C
12)D

1)The poles of a magnet are from [A] North and South [B] East and West [C] South and West [D] East and North

2)Electrical circuits can be connected in [A] Parallels and diagonal [B] series and circular [C] straight line and alternate [D] series and Parallel

3)End-to-end connection is [A] straight connection [B] series connection [C] Parallel connection
[D] circular connection

4)The device used to measure current is the [A] Ammeter [B] current guage [C] Electric meter
[D] Electometer

5)The ozone layer is located in the [A] stratosphere [B] Hydrosphere [C] ionosphere [D] Atmosphere

6)The ionosphere is divided into [A] mesosphere [B] thermosphere [C] Both [D] None of the above

7)Global warming is associated with the accumulation of _in the atmosphere [A] carbondioxide [B] carbonmonoxide [C] carbontrioxide [D] carbon

8)Which of these is not an effect global warming
[A] Rising ocean level [B] climate change [C] increase in atmospheric pressure [D] condusive weather

9)Ozone layer depletion is caused by which of these [A] CO2 [B] CO [C] CFC [D] H2O

10)All of these are effects of ozone layer depletion except [A] skin cancer [B] Enhanced vision
[C] cataract [D] Glaucoma

30/7/2020
Subject; Basic science
Class;JSS3
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

1)c
2)D
3)B
4)A
5)B
6)D
7)D
8)A
9)c
10)D

1)An acidic solution will most likely have a PH of [A] 7 [B] 12 [C] 4 [D] 8

2)Which of these is not a fresh water habitat [A] ocean [B] River [C] Stream [D] pond

3)The organ involved in olfaction is [A] Ear [B] Eye [C] Nose [D] Tongue

4)During photosynthesis energy from the sun is converted to [A] kinetic energy [B] light energy [C] mechanical energy [D] chemical energy

5)The building block of protein is [A] polypeptide [B] Amino acids [C] sucrose [D] Glycerol

6)Which of these is not a part of the alimentary canal in human [A] Oesophagus [B] Pancreas [C)Diaphragm [D] Duodenum

7)Which of these vectors transmit malaria parasite [A] Tsetsefly [B] Blackfly [C] Anopheles mosquito [D] male ticks

8)The strongest part of the tooth is the [A] Enamel [B] Dentine [C] Pulp [D] Gum

9)The following solid particles cause environmental contamination of air except [A] Dust [B] Pollen grains [C] Sand [D] carbon(iv) oxide

10)The action of enzymes on food substances during digestion is describe as the mechanism
[A] physical [B] mechanical [C] chemical [D] light

11)Amylases are enzymes that act on [A] Proteins [B] fat [C] carbohydrate [D] milk

12)High sugar level in the blood is known as [A] obesity [B] High blood pressure [C] Hypertension d)diabetes

27/7/2020
Subject; Basic science
Class;JSS3
Topic;General review

1) The major agencies that control the production and use of drugs in Nigeria include I= NDLEA, II = NAFDAC, III=SON [A] I only [B] II only [C] I and II [D] II and III

2)All of these are effects of drug abuse except [A] Hallucination [B] skin rashes [C] mood swings [D] improved health

3)Some of the drugs abused in Nigeria include [A] codeine [B] cocaine [C] cannabis [D] All of the above

4)The whole process of food digestion occurs in about [A] 3-4hrs [B] 2-3hrs [C] 4-5hrs [D] 1-2hrs

5)A semi-solid substance formed in the stomach during food digestion is called [A] chyle [B] chyme [C] Bolus [D] complex sugar
6)Which of these is not a characteristic of enzymes [A] they are specific in action [B] they act best within a range of temperature [C] they enhance the rate of a reaction [D] they are not damaged by high temperatures

7)The tropical rainforest is found in the __ part of Nigeria [A] Northern [B] Eastern [C] Southern [D] Western

8)Which of these activities does not encourage deforestation [A] planting of trees [B] industrialization [C] Establishment of parks [D] urbanization

9)Trees gotten from the forests are use for all of these except [A] making furniture [B] construction of Houses [C] Production of plastics [D] making of papers

10)Forest resources are important because [A] they are sources of herbs and medicine[B] they serve as ornamental purposes [C] they are useful in construction works [D] All of the above.

23/7/2020
Subject; Basic science
Class;JSS3
Topic;General review

Morning students, how was your high? 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)C
3)c
4)c
5)D
6)B
7)B
8)A
9)C
10)c

General review

1)The aim of pasteurization as a method of food preservation is [A] To remove moisture [B] To keep the food item dry [C] To make the food item fresh [D] To kill microorganisms in the food item

2)Choose the odd one out [A] sandy soil [B] stony soil [C] clay soil [D] loamy soil

3)Which one of these is not a feature of clay soil [A] Easily water logged [B] contains a lot of nutrients [C] sticky when wet [D] it is hard and crackswhen dry

4)Which of these is not a solid minerals [A] crude oil [B] coal [C] Limestone [D] Gold

5)Coal is a resource gotten from which of these locations [A] Lagos [B] Anuja [C] Ibadan [D] Enugu

6)Ajaokuta is popular because of the large deposit of [A] Crude oil [B] Coal [C] Limestone [D] copper

7)The state known for their high food production is [A] Abia [B] Lagos [C] Osun [D] Benue

8)itakpe in Kogi State is known for its __ deposit [A] Iron [B] salt [C] Uranium [D] crude oil

9)Which of these statements is true about light on a plane mirror [A] Angle of incident is less than angle of reflection [B] Angle of reflection is greater than the angles of incident [C] incident angle is equal to angle of reflection [D] Both angles are unequal

10)Which of these is not a STI/STD [A] HIV/AIDS [B] Syphilis [C] Gonorrhea [D] Tuberculosis

11)Which of these is simple sugar [A] Galactose [B] Maltose [C] Lactose [D] glucose

12)Short sight is corrected using [A] Concave lens [B] Convex lens [C] Double lens [D] Eye lens

13)Deficiency of vitamin D causes [A] Scurvy [B] Rickets [C] Goitre [D] Beri Beri

14)In the olden days, magnetism was first discovered in an/a [A] Iron [B] Cave [C] Atom [D] Load stone

15)The law of magnetism states that: [A] Like poles attract and like poles repel [B] like poles attract and unlike poles repel [C] unlike poles repel and unlike poles attract [D] like poles repel and unlike poles attract

20/7/2020
Subject; Basic science
Class;JSS3
Topic;General review

General review

1)The major difference between man and other mammals is [A] Highly developed brain [B] Breast feeding the young [C] Eyes in front of the head [D] furs over the body

2)All of these are fibre crops except [A] silk [B] pearl c) agar [D] cotton

3)Which of these is a fibre crop [A] fruits [B] vegetables [C] cotton [D] cocoa
4)Which of these set of crops are cereals [A] cabbage lettuce, barley [B] pineapples, millet oranges [C]maize, rice wheat, guinea corn [D] sorghum, Barley, guava

5)The major nutrient contained in groundnut is
[A] vitamins [B] carbohydrate [C] fats and oils [D] Protein

6)Carrots in fruit salad provides a source of
[A] vitamins B [B] Vitamins C [C] Vitamins K [D] Vitamin A and E

7)Horse, camels and oxens are generally known as
[A] milk producing animals [B] Beasts of burden
[C] wool producing animals [D] Burden of farmers

8)Drying as a method of food preservation [A] Remove water and moisture [B] makes the food sweet [C] leaves the food fresh [D] shortens the shelf life of the food

9) Which of these is not a modern way of food preservation [A] Bottling [B] Refrigeration [C] salting [D] canning

10)All of these are benefits of resources gotten from the environment except [A] Revenue generation [B] food provision [C] boost economy growth[D] food spoilage

16/7/2020
Subject; Basic science
Class;JSS3
Topic;General review

morning students, how was your night? I hope you are keeping safe. Correction on the previous work is given below. Then,let continue with our general review.

Correction
1)none
2)C
3)A( genes)
4)D
5)C
6)B
7)B
8)B
9)A
10)D
11)B
12)A
13)A
14)C
15)C

General review

1)Which of these is not a part of the skin [A] sweat gland [B] Hair shaft [C] cerebrum [D] sebaceous gland

2)The bacterium that causes gonorrhea is [A] plasmodium malaria [B] Treponema pallidum [C] Neisserra gonorrhea [D] mycobatenum dysenterae

3)All of these are compounds except [A] H2O [B] CO2 [C] O2 [D] CO

4)The chemical formula for table salt is [A] Kcl [B] CaCl2 [C] Nacl [D] MgCl2

5)Femi does not feel hurt again when he steps on a sharp object which part of this body system has been affected? [A] Brain [B] Muscle [C] skin [D] Nerve

6)Most plants are green in colour due to the presence of [A] sunlight [B] chlorophyll [C] leaves [D] Roots

7)The simplest unit of a substance that can exist separately is [A] Atom [B] ion [C] molecule [D] Element

8)A mixture of sand and salt can be separated based on the differences in their [A]size[B]Texture [C] colour [D] solubility

9)The process by which water is changed to steam is known as [A] Evaporation [B] Freezing [C] Cooling [D] Sublimation

10)The No of atoms in a molecule of an element is called __ of that element [A] Atomic No [B] mass No [C] Atomicity [D] formula

11)Matter exists in all of these states except [A] Gas [B] solid [C] semi-solid [D] liquid

12)Which of these is an impure substance [A] Hydrogen [B] Air [C] Oxygen [D] Distilled water

13)Ozone is represented chemically as [A] O1 [B] O2 [C] O4 [D] O3

14)All are metals except [A] carbon [B] sodium [C] Aluminum [D] Magnesium
15)Which of these is not a separation method [A] Decantation [B] sieving [C] Boiling [D] chromatography
y

13/7/2020
Subject; Basic science
Class;JSS3
Topic;General review
Morning students, how was your weekend? the correction for the previous assignment is stated below and let’s start with general review for today.
Correction
1)Concave lens are divergence lens that spread out light that have been refracted through it.while convex lens are convergence lens that focuses light rays to a specific point
2)Rods are responsible for vision at low light levels,it does not mediate colours while cones are responsible for vision at high light levels ,it mediates colours

General review

1)The central nervous system (CNS) comprises the following [A] Nerves and Heart [B] Brain and Brain cord [C] spinal cord and Heart [D] Blood vessels and Brain

2)The following are the negative consequence of drug abuse except [A] Hallucination [B] organ malfunction [C] Healing [D] insanity

3)The basic units of inheritance in living organisms are the [A] Genus [B] cells [C] RNA [D] Nucleus

4)Salivary juid contains an enzyme called [A] Gland [B] Erepsin [C] maltose [D] ptyalin

5)In the small intestine, absorption of food substances occurs through the [A] Ileum [B]
muscular walls [C] villi [D] Enzymes

6)Vitamin A is needed in diet for [A] Easy digestion [B] Good vision [C] promote growth [D] None of the above

7)The chemical symbols of sodium and Gold are _ and respectively [A] So and Gd [B] Na and Ar [C] K and Ag [D] Na and Au

8)Growth in an organism is [A] continuous [B] irreversible [C] Reversible [D] Rapid throughout life

9)Which of these is an example of chemical change
[A] Rusting of Iron [B] Escape of vapour from boiling water [C] melting o f candle wax [D] dissolution of sugar in water

10)Which of these is not a type of taste [A] umani [B] sour [C] salty [D] None of the above

11)Hpermetropia can be corrected using [A] concave lens [B] convex lens [C] contact lens [D] Binoculars

12)In short sighted patients, the image of an object is formed [A] behind the retina [B] on the retina [C] in front of the retina [D] in from of the lens

13) The eardrum is also known as the [A] Ear canal [B] Tympanum [C] Ear ossides [D] Ear wax

14)Which of these is not a part of the skin [A] sweat gland [B] Hair shaft [C] cerebrum [D] sebaceous gland

15)The bacterium that causes gonorrhea is [A] plasmodium malaria [B] Treponema pallidum
[C] Neisserra gonorrhea [D] mycobatenum dysenterae

9/7/2020
Subject; Basic science
Topic;Dispersion of light.
Sub topics:

What is dispersion of light
-Colours of the rainbow
-Experiment to demonstrate dispersion of light

Morning students, how was your night? the correction for the previous assignment is stated below and the topic for today is dispersion of light.
Correction
1)vision
It occurs when light pass through the cornea, it does about three quarter of focussing and the lens adjust the focus.
2)Apparent depth;It is the depth that is less than the actual depth of an object when viewed from the top of a beaker.

Dispersion of light
Splitting of light into its components colour is called dispersion of light. It splits after refracting through a glass prism.

Colours of the rainbow
-Red
-orange
–yellow
-Green
-Blue
-Indigo
-Violet (ROYGBIV)

Experiment to demonstrate dispersion of light using soap bubbles
Apparatus; Detergent, bucket, water,practical science note book
Method;
-put sufficient detergent in a bucket of water
-Generate bubbles
-Observe the colour in the soap bubbles .How many colours can you see.
Observation; Soap bubbles split light into its components.

Other materials that can disperse light into its components
1)Casing of your Biro,when a ray of light strike it at an angle
2)Air after rainfall in which the seven components of light are visible in the sky.

Questions
1)Differentiate between concave and convex lens
2)Differentiate between rods and cones

6/7/2020
Subject; Basic science
Topic;Light energy(continuation)
Subtopics:
-Refraction of light
-Laws of refraction
-Experiment to demonstrate apparent depth of object in water.

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 light energy (continuation).
Correction
1)incident ray
A ray of light that falls on a surface
2)Reflected ray
A ray of light that bounces back after reflection on a shiny surface
3)Emergent ray
When an incident ray travels from one medium to another, it gets refracted
4)Virtual image
An image formed behind the mirror and cannot be captured on a screen
5)Real image
An image which can be captured on a screen

Refraction of light
It occurs when the light rays travel from a thicker medium (water) to a lighter or less dense medium(air) or from a lighter medium to a thicker medium. Example of refraction is when light falls on smooth or polished curved surfaces.

Laws of refraction
1)The incident ray,refracted ray and the normal ray ,all lies on the same place
2)The ratio of the sine of angles of incident ray and the sine of refracted ray is called refracted index.
Mathematically,it is represented as n=sine I°/sine r°
Where n is the refractive index of the medium.

Experiment to demonstrate apparent depth of object in water.
Apparatus: coin or lid of bottle, beaker,water,notebook
Method:
-put a coin or bottle lid in a beaker containing water
-make sure the coin stay at the bottom
-view it at an angle ,what do you see?
Observation; you will observe that coin appears raised up.

Questions
1)Define vision
2)what is the meaning of apparent depth?

2/7/2020
Subject; Basic science
Topic;Light energy(continuation)
Sub topics:
-Reflection of light
-Laws of reflection
-Experiment to demonstrate reflection of light
Morning students, how was your night?and happy new month,the correction on the previous assignment is stated below and today’s topic will be continuation of Light energy.
Correction
1a)Light path ;path or direction through which light travels
1b)Beam of light; collection of rays of light
2)
A)Convergent beam of light
It occurs when rays of light meet at a point
B)Divergent beam of light
It occurs when rays of light leave a point to different places
C)parallel beam of light
It occurs when rays of light in a straight line such that they cannot meet themselves.

-Reflection of light
It occurs when the incident ray of light strike on the plane mirror and the reflected ray of light is out from the same point of incidence

-Laws of reflection
1)The angle of incidence is equal to the angle of reflection
2)The incident ray, the reflected ray and the normal, at the point of incidence on the mirror, all lie on the same plane.
3)The image formed by a plane mirror is always erect of the same size as object and virtual
4)The image is formed as far behind the mirror as the object is in front of it
5)The image is laterally inverted.

-Experiment to demonstrate the reflection of light using a mirror
-Apparatus: small size mirror, science note book
-Method;
-Expose a mirror to the light I.e to the sun
-Tilt the mirror until is focused on the wall of your classroom.
-Observation; It will be observed that the size and shape of the mirror will be seen on the wall
-Conclusion: Since the size and shape of the mirror are seen ,the ray is said to have reflected on the wall.

Questions
Explain the following
-Incident ray
-Reflected ray
-Emergent ray
-virtual image
-Real image.

29/6/2020
Subject; Basic science
Topic;Light energy
Sub topics;
-The meaning of light energy
-Functions of light energy
-properties of light

Morning students, how was your weekend?the correction for the previous assignment is stated below and the topic for today is light energy
Correction
1)Electric shock: It is a dangerous and painful physiological effect caused by the passing of an electric current through the body of an human or animal.
2)Transformer: It is a passive electrical device that transfers electrical energy from one electrical circuit to another or multiple circuits.

Light energy
It is a form of energy that can perform various functions and it travels in a straight line.ln the dark,we cannot see but man made sources of light are provided e.g electric light, gas lamps,kerosene lamps,candle light.

Functions of light
1)It can cause photographic paper to darken
2)it causes the pointer of a light meter to move
3)plants make use of energy from sunlight to produce there food in form of glucose through the process of photosynthesis.

Properties of light
1)It travels on a straight line path(rectilinear propagation of light)
2)Transmitted as in a glass sheet
3)Reflected as in a mirror
4)Refracted as in a rectangular glass block or inside water
5)Absorbed as in clothing materials

Questions
1)Differentiate between light path and beam of light

2)Explain the following
A)Divergent beam of light
B)Convergent beam of light
C)parallel beam of light

25/6/2020
Subject; Basic science
Topic; Electricity
Sub topics:
-Current, Voltage, Resistance
-ohms law
-Circuit
-Safety with electricity

Morning students, how was your night? the correction on the previous assignment is stated below.the concluding part of the last topic (Electricity) is discussed below.

Correction
Cells: It has chemicals inside them that generate small amounts of electricity e.g cameras,remotes,torches.
Batteries: It is the combination of two or more cells.A battery produces more electricity than a cell e.g car

Solar cells; It can convert the sun’s energy into electricity that is stored in batteries for use.
Circuit; The path through which electricity flows is called a circuit.

Current
It is the amount of charge that passes through a given point within one second. It is measured in amperes with the use of ammeter.(I=Q/T).

Voltage
The current that flows through a wire does so due to a potential difference between the two ends.it is the work done to move a unit charge from one point to another it is denoted as V.

Resistance
The resistance of a conductor is its property to resist the flow of current through it.An insulator has a very high resistance.. It is denoted as R

Ohms law
It States that the current flowing through a circuit is directly proportional to the potential difference. I.e l =V/R

Circuit;There are 2 types of circuit(Series and parallel circuit
-Series circuit: Electricity flows only through one path
-Parallel circuit; Electricity flows through more than one path.

Safety measures to avoid electric hazards
1)Replace light bulbs only when the switch is off
2)Never play with electrical tools and gadgets
3)unplug electrical appliances when not in use
4)Regular inspection and replacement of old and worn out electric wires
5)Never touch electrical gadgets and switches with a wet hand .

Questions
1)What do you understand with the word ‘electric shock’ ?
2)what is a transformer?

Subject; Basic science
Topic;Electrical energy(Introduction)
Sub topics;
-Electric current
Sources of electricity
-Insulator and conductor

Morning students, how was your night? Today’s topic is Electrical energy but the Correcction on the previous assignment is stated below.

A)uses of magnet
-To hold things together
-To make electric motor and generator work.

B)Care of magnet
-It must be stored with keepers
-It must be stored side by side with another magnet with its north pole next to the south pole of the other magnet.

Electrical energy
It is a form of energy, the movement of charges through a conducting material is called electric current. Electricity consumption is higher than its generation while various gadgets that run on electricity includes ;Light bulb,fan,TV,iron ,computer, mixer,camera e.t.c.

Sources of electricity
It includes the following
-power station
-Cells and batteries
-Solar cells
-Circuit
Note:A device connected to a circuit in order to complete or break the circuit is called a switch.

Conductor and insulator
Substances that allow electricity to pass through them e.g metals are called conductors while substances that do not allow electricity to pass through them are called insulator e.g plastic,wool,cardboard and cloth.
Current is measured in amperes using an ammeter,voltage is measured in volts using voltmeter while resistance is measured in ohms.
Questions
Differentiate between

1)cells and batteries
2)Circuit and power station

18/6/2020
Subject; Basic science
Topic;Magnetism
Sub topics;
-The meaning of magnetism
-Magnet
-kinds of magnets
-Laws of magnetism
-Care of a magnet
Morning students, how was your night? Today’s topic is magnetism but the previous assignment is stated below.
1)Morals :It is formed out of values, they are actual system of beliefs that emerge out of a persons core values.it is specific and context driven rules that governs individual’s behaviour
2)Ethics: They are morals in action.I.e set of principles of right conduct accepted by the society.
3)Values: They are the foundation of a persons ability to judge between right and wrong.it involves deep rooted system of beliefs.

Magnetism
It is the physical force that either attracts or repels two metal objects.
Magnet
It has the property of attracting iron.The oldest natural magnet known to man is Lodestone(consist of iron oxide called magnetite.

Types of magnet
A)Natural magnet;Those found in nature e.g Lodestones
B)Artificial magnet; Those made by man e.g bar matgnets,ring magnet,horseshoe magnet e.t.c

Laws of magnet
-Like poles of magnet repel while unlike poles attract

Care of a magnet .
1)It must not be hammered
2)It must not be dropped from a height
3)It must be kept away from heat source
4)It must be kept away from objects like CDs,TVs,credit cards.

Questions
1)State two uses of a magnet
2)List 2 other ways to care for a magnet

15/6/2020
Subject; Basic science
Topic; Ethical issues in science and development
Sub topic;-

-What are ethics?
-Ethics in science
-Scientific practices that are unethical
-Ethical debates
Morning students, how has been your weekend? I hope it was great, please let’s continue to keep safe, today’s topic is Ethical issues in science and development ,but the corrections on the previous assignments is stated below.
Corrections on the previous assignments

1)Other areas where skills can be acquired
A)Bead making
B)Hair dressing
C)Networking
D)Shoe making
E)Graphic designing

2)Other reasons for skill acquisition
A)To manage emergency situation
B)To improve communication via chatting, texting and email.

What are ethics?
It is a set of principles of right conduct, a system of moral values that are accepted by society or by members of a profession.

Ethics in science
There are various invention that have improved the quality of life of people which are mentioned below.
A)Improvement in health care
B)Availability of safe and purified clean water
C)Better mode of commuting e.g aeroplane, cars,train.
D)Increase and sharing of knowledge across the globe with the help of ICT
E)Technological advancement in agriculture resulting in better crop production.

Unethical scientific practices
1)Use of bombs and missile to kill people
2)Use of chemical and biological warfare to kill people and also act as terrorism.
3)Use of Guns

Ethical debates
There are various issues that are debated which are mentioned below
1)Abortion
2)Mercy killing
3)War
4)Death by electrocution
5)Domesticating wildlife e.t.c
Questions
1)Differentiate between ethics,values and moral.

11/6/2020
Subject; Basic science
Topic; Skill acquisition
Sub topic;

-The meaning of skill acquisition
-Types of skill acquisitions-
-Reasons for skill acquisition

Morning students, how has been your week? Hope you are great? the topic for today is skill acquisition,but the corrections on the previous assignment is stated below.

Corrections on the previous assignment
1)Uses of mineral resources
A)For production of utensils, foils,paints,aircraft e.g aluminium
B)For making fertilizer e.g phosphate
C)For lining floors of homes and other buildings e.g marble
D) For chemicals and cement production e.g limestone e.t.c

2)Different mineral resources ,its location and state
1)Tin(Kuru in plateau state)
2)Iron (itape in kogi state)
3)Kaolin (umuahia in Abia state)
4)Coal(UDI hills in Enugu)
5)phosphate (ifo Junction in Ogun)

Skill acquisition
It refers to a special ability which a person acquires along with the proficiency needed to perform a practical task.

Types of skill acquisition
A)Farming
B)photography
C)Journalism
D)Cosmetology
E)Fashion designing
F)plumbing
G)Carpentry
H)Computer literacy
I)publishing and printing e.t.c

Reasons for skill acquisition
1)To earn livelihood
2)To build team spirit
3)To provide services to society
4)To increase knowledge and growth e.t.c.

Questions
1)List other 5 areas skills can be acquired in your area
2)State 2 other reasons why skills must be acquired.

8/6/2020
Subject; Basic science
Topic; Resources from no

n living things(Solid minerals)
Sub topic; -What are mineral resources
-Examples of mineral resources
-uses of mineral resources

Morning students, how was your weekend? Hope it was great, the topic for today is mineral,but the corrections on the previous assignment is stated below

Corrections on the previous assignment
1)Types of soil based on its nature and composition
A)Alluvial soil
B)Black soil
C)Red soil
D)Mountain soil
E)Desert soil
F)Laterite soil
2)The best type of soil for planting is loamy soil because it is fertile, full of organic and mineral matters, it drains well and still retain moisture and densely packed soil.

Minerals
They are valuable naturally occurring substances found in the earth crust used by man,they are located in Nigeria.It helps to strengthen the economy of the country and are used for making many products used by man.
Examples of mineral resources
1)Tin
2)Iron
3)Coal
4)Limestone
5)Aluminum
6)Phosphate
7)Gold
8)Marble
9)Kaolin
10)Lead e.t.c

Uses of mineral resources
1)As fuel e.g coal
2)As fertilizer e.g phosphate
3)For making toilet components e.g kaolin

4)for road construction e.g coal e.t.c

Questions
1)State 4 other uses of mineral resources
2)State 5 mineral resources in Nigeria ,indicate its location and state .

4/6/2020
Subject; Basic science
Topic;Resources from non living things
Sub topics;
-Soil
-Composition of soil
-Types of soil
-composition of soil
Uses of soil

Morning students, how was your night? hope you are enjoying the holiday?Today’s topic is Resources from non living things (Soil).Before we start,the Corrections on the previous assignment is stated below.
Uses of plant
1)As food e.g chocolate products from cocoa
2)As fabrics for clothing and packaging
3)For medicinal purpose e.g Dongoyaro for the treatment of malaria
4)Provision of raw materials for timber and paper
5)For building construction e.g wood

Uses of animal
1)As beast of burden e.gcamels,donkeys, horses
2)As an important source of food e.gfish
3)For production of bags,shoes,belt e.g animal skin
4)For sporting activities
5)For jewellery making e.g pearl,shellac e.t.c

A)Cash crops ;They are crops planted on a very large piece of land for commercial purposes I.e to generate income e.g cotton,cocoa, rubber. e.t.c
B)Food crops;They are crops planted on a small piece of land for domestic purposes. e.g maize, yam,okro,tomatoes e.t.c

3)Uses of shellac
A)For cosmetics
B)As abrasive

Soil
It is the uppermost layer of the earth crust,which gives space to live and carry out all our day to day activities

Composition of soil
1)Air
2)Water
3)Organic materials
4)Living organisms
5)Minerals
6)Dead plants
7)Stones e.t.c

Types of soil
There are six major types of soil which are listed below,also there are some based on its nature and composition
1)Sandy soil
2)Silty soil
3)Clayey soil
4)Loamy soil
5)Peaty soil
6)Chalky soil

Uses of soil
1)For cultivation of crops
2)For mining
3)For construction of roads,building and Bridges
4)As a natural habitat for organisms e.g ant,earthworm
5)Minerals are gotten from the soil.

Questions
1)List other types of soil based on its nature and composition
2State the best type of soil good for planting and why?

Note;Make sure all notes are written in your book.

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1/6/2020

Subject; Basic science

Topic; Resources from living things

Sub topic; –

-What are resources

-Categories of living things and uses

-Economic importance of plant and animal resources

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

Corrections on the previous assignment

1)Uses of acid

A)For production of drugs e.g folic acid

B)For manufacturing of fertilizer

C)To remove rust(acid prickling

D)As lead accumulator

E)Tartaric acid is used for making baking soda,soft drinks and healthy salts.

2)Neutralization reaction occur when an acid react with a base to form salt and water.e.gHCl +NaoH=Nacl+H20

Acid	Formular (Basicity)
Carbonxylic acid	R-COOH (1)
Ethanoic acid	CH3COOH. (1)
Tetraoxosulphate vi acid	H2SO4. (2)

Compounds	Formula
Sodium chloride	Nacl
Aluminium oxide	Al2O3
Barium sulphate	BaSO4
Silver trioxonitrate (v)	AgNO3
Calcium carbonate	CaCO3

What are resources?

They are materials gotten from the environment (both living and non living things) which could be in their natural or refined form.

Categories of living things

A)Bacteria

B)Fungi

C)plants

D)Animals

Bacteria

They are unicellular and very simple organisms, some are harmful to the body while some have beneficial effect.

Its importance

1)To produce antbiotics that help to kill other germs

2)It produces enzymes and vitamins

3)For decomposition of nature

4)In genetic engineering

5)To cure hides used in the production of leather goods e.t.c

Fungi

They are multicellular, heterotrophic organisms with thick cell walls

Its importance

1)To produce bread and alcohol in form of yeast

2)To decompose dead and decaying organic matter

3)To produce antibodies

4)As nutritious food e.g mushroom

Economic importance of plant and animal resources

1)To earn money

2)Employment opportunity

3)It feeds the nation

4)It helps in industrialisation

5)It increases the economic status of the country

Questions

1)State 5uses of

A)plant

B)Animal

2)Differentiate between cash crops and food crops

3)State 2 uses of shellac

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28/5/2020

Subject: Basic science

Topic: Acid

Subtopic:

– what is an acid

-Classes of acid

-Properties of acid

-Basicity of an acid

-Uses of an acid

Hello students, how has been your holiday? hope you are keeping safe? The topic for today is Acid

-What is an acid?

An acid is a substance that produce hydrogen ion or oxonium ion as the only positive ion when dissolved in water. There are 2 major classes of acid which are;

1) Organic acids: They are produced by living organisms (plant and animal) .Examples are;citric acid (orange),Amino acid (protein-plants),Lactic acid (milk- animal) e.t.c.

2) Inorganic acids or mineral acids: They are acids that are chemically synthesized in the laboratory e.g Hydrochloric acid (HCl),Tetraoxosulphate vi acid e.t.c

Physical properties of an acid

1) It is corrosive

2) It turns wet blue litmus paper red e.t.c

Chemical properties of an acid

1) It reacts with metals to produce hydrogen gas

2) It react with base to produce salt and water i.e Neutralization reaction e.t.c

Basicity of an acid

It is the number of replaceable hydrogen atom in one mole of an acid e.g. Hydrochloric acid has only one replaceable hydrogen atom while tetraoxosulphate vi acid has two replaceable hydrogen atoms.

QUESTIONS

S tate 5 uses of an acid
Define neutralization reaction
Mention the basicity of the following acids;

a) Carbonxylic acid

b) Ethanoic acid

c) Tetraoxo phosphate v acid

4) Write the formula of the following compounds

a) sodium chloride

b) Aluminium oxide

c) Barium tetraoxosulphate (vi)

d) Silver trioxo nitrate v

e) Calcium carbonate

keep staying safe.

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L E S S O N T W O

25 – 05 – 20

ANSWER THE FOLLOWING QUESTIONS.

1.List 3 ways by which we can take proper care of our eyes.

2.Differentiate between catabolic and anabolic reactions.

3. Mention the type of lens that can be used to correct the following types of eye defects. i.myopia ii.hypermyopia. iii.astigmatism

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Hello students, how has been your day?hope you are good?,I will like to revise the topic; sense organ.

What are sense organ?

They are specialized body structures that receive both internal and external stimuli

They are;Eyes,nose,tongue,skin,ear.

The eye

It is used for seeing and it is majorly divided into three phase which are;

1)The outer eye(sclera)

2)The middle eye (choroid)

3)The inner eye(Retina)

I believed you still remember the various ways of caring for the eye which are;

1)keep dangerous object away from the eyes

2)wash with clean water if any particles enter into the eye

3)Read where there is enough light always

Various eye defect

1)Myopia (short sightedness)

2)Hypermetropia(Long sightedness)

3)Astigmatism

4)Night blindness

Question; Briefly explain the mechanism of vision based on what we have discussed in class before

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

structure of the eye

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18/5/2020

Subject;Basic science

Topic;Metabolism in the body

Sub topic;-

-What is digestion?

– parts of the digestive system

– processes of digestion

-structure of the digestive system(alimentary canal)

-Dangers of excess food storage in the body

Hi everyone, I believe you are fine especially during this holiday, I will like to revise the topic;Metabolism in the body(Digestive system)

-What is digestion?

It is the catabolic process that involve the breaking down of complex food substances into simpler form with the release of energy for proper metabolism to take place.

Can u still remember the various parts of the digestive system,which are;

-Mouth

-oesophagus

-Stomach

-Small intestine

-Large intestine e.t.c

l will quickly move to the various processes of digestion, I hope you can still remember, they are;

-Ingestion;A process of taking food into the body

-Digestion;An enzymatic breakdown of complex food.

-Absorption;A process where the simple food is absorbed in large intestine

-Assimilation; A process where food is transported to the various cells of the body and utilized for energy production

-Egestion;A process where the undigested food is stored in the rectum temporarily and removed from the body through the anus

Structure of the digestive system

Lastly,I will talk on the various dangers associated with excess food storage in the body which are;

-Obesity

-High blood pressure

-High blood sugar

-Heart problem

-Stress on kidney and liver

-Difficulty in movement

-Back pain

Questions

1)Food digestion is completed in the _

2)Excess fats are stored in the__

3)Storage form of carbohydrate in the body is_

4)Excess amino acids are excreted as __

5)State 4 enzymes that take place in digestion of food

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

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