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Basic Science Grade 8

Total questions: 20

Worksheet time: 40mins

Name
Class
Date
1.

Calculate the force in Newton's, of a car of mass 20kg accelerating at 2ms².

a)

0.1

b)

10.0

c)

18.0

d)

22.0

e)

40.0

2.

Calculate the work done in joules if a horizontal push of 15N moves a box horizontally through a distance of 5m.

a)

0.033

b)

30.00

c)

75.0

d)

960

e)

9600

3.

The energy possessed by a stretched rubber is ______________.

a)

electrical

b)

heat

c)

light

d)

kinetic

e)

potential

4.

The washing or blowing away of soil by water or wind is known as _______

a)

deforestation

b)

depletion

c)

desertification

d)

erosion

e)

vegetation

5.

The liquid waste consisting of faeces , urine and water is called________.

a)

effluent

b)

garbage

c)

refuse

d)

sewage

e)

waste.

6.

which of the following is not a characteristic of living things

a)

excretion

b)

expansion

c)

feeding

d)

movement

e)

respiration

7.

The following are abiotic factors except____

a)

light

b)

pest

c)

rainfall

d)

temperature

e)

water.

8.

Factors that affect growth include the following except_____

a)

disease

b)

exercise

c)

food

d)

heredity

e)

skill.

9.

A substance which consists of one kind of matter is called a/an ______

a)

atom

b)

chemical

c)

compound

d)

element

e)

mixture

10.

Lever are supported at a point know as _________

a)

bar

b)

. effort

c)

fulcrum

d)

load

e)

support

11.

Matter exists in three state namely______

a)

atom, gas, and liquid.

b)

electrons, protons and neutrons.

c)

liquids, gases and solid

d)

particles, protons and neutrons

e)

Solid, water and gas.

12.

A force of 16N moves a load through a distance of 20m. Calculate the work done?

a)

0.8J

b)

4.0 J

c)

36.0J

d)

160.0J

e)

320.0 J

13.

Which of the following is not a flowing plant?

a)

fern

b)

flamboyant

c)

hibiscus

d)

ixora

e)

pride of Barbados

14.

The human male sex cell is called ___________

a)

ovum

b)

penis

c)

scrotum

d)

Sperm

e)

testis.

15.

Lack of vitamin B in the body causes the following except ________

a)

abdominal pain

b)

anaemia

c)

beriberi

d)

general weakness

e)

rickets.

16.

Which of the following must be present for rusting to occur?

a)

water only.

b)

water and carbon dioxide

c)

water and hydrogen

d)

water and nitrogen

e)

water and oxygen.

17.

A substance that does not allow light to pass through it is said to be ______

a)

dark

b)

opaque.

c)

plane

d)

translucent

e)

transparent

18.

The ability to do work is known as __________

a)

density

b)

energy

c)

force.

d)

mass

e)

power.

19.

A substance containing two or more substances physically combined together is referred to as a/an________

a)

.compound

b)

element

c)

metal

d)

mineral

e)

mixture.

20.

The stomach is part of the ___________ system

a)

circulatory

b)

digestive

c)

endocrine

d)

nervous

e)

respiratory.