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science grade 4 revision

Total questions: 50

Worksheet time: 25mins

Name
Class
Date
1.

The force that sends the rocket forward is called

a)

thrust

b)

drag

c)

speed

d)

gravity

2.

The force that makes an aeroplane rise is called

a)

drag

b)

thrust

c)

lift

d)

gravity

3.

Force that pulls the object towards earth

a)

lift

b)

friction

c)

gravity

d)

buoyancy

4.

A push or a pull is

a)

force

b)

acceleration

c)

motion

d)

speed

5.

Distance of the object in certain period of time is called

a)

acceleration

b)

force

c)

speed

d)

motion

6.

The force that slows a vehicle as it moves through a liquid or a gas is called

a)

thrust

b)

drag

c)

lift

d)

force

7.

When a object changes speed or direction it

a)

rotates

b)

speed increases

c)

accelerates

d)

stops

8.

solution to a problem is

a)

design process

b)

technology

9.

A scientist who designs new cars is a

a)

doctor

b)

engineer

c)

designer

d)

teacher

10.

To invent a solution to a problem , we use

a)

technology

b)

engineer

c)

design process

d)

recycling method

11.

SOLAR CELLS changes sunlight into

a)

heat

b)

electricity

12.

Look at the picture. what does this tool measures?

a)

precipitation

b)

wind direction

c)

wind pressure

d)

air pressure

13.

A liquid changes slowly into gas. The process is called

a)

condensation

b)

evapouration

c)

freezing

d)

sublimation

14.

The blanket of air surrouding the earth is called

a)

stratosphere

b)

gas

c)

atmosphere

d)

trosphere

15.

The pattern of seasonal weather in a region over many years is called

a)

rainy season

b)

weather

c)

climate

d)

temperature

16.

A is a prediction of weather conditions

a)

telecast

b)

forecast

c)

radio forecast

d)

news casting

17.

Which tool is used to measure air temperature?

a)
b)
c)
d)
18.

In which layer of atmosphere do organisms live.

a)

stratosphere

b)

exosphere

c)

mesosphere

d)

troposhere

19.

gas changes to liquid is

a)

evapouration

b)

condensation

c)

precipitation

d)

sublimation

20.

When a solid ice changes to liquid water the process is called

a)

condensation

b)

evapouration

c)

sublimation

d)

liquification

21.

look at the forecast and choose the correct statement which describes the image properly.

a)

the pattern of season that happens year after year is called climate

b)

the condition of the atmosphere that changes day to day is called weather.

22.

air that just passed over a mountain is

a)

warm

b)

wet

c)

dry

d)

heavy

23.

latitude is a measure of distance from

a)

an air mass

b)

an ocean current

c)

a mountain

d)

the equator

24.

Where is altitude highest?

a)

on a mountain top

b)

at the bottom of mountain

c)

at sea level

d)

in the valley

25.

Which tool is used to measure air pressure?

a)
b)
c)
d)
26.

when does the sun rises highest in the sky in the northern hemisphere?

a)

march

b)

june

c)

september

d)

december

27.

which process takes earth 24 hours to complete?

a)

revolution

b)

shadow

c)

rotation

d)

seasons

28.

moon has its own light source of energy

a)

true

b)

false

29.

The moon reflects light from the sun.

a)

true

b)

false

30.

The movement or spin of the earth around the sun is called

a)

rotation

b)

revolution

c)

spinning

d)

orbit

31.

whar causes many of the craters on the moon?

a)

meteoroids striking on the moon

b)

earthquakes on the moon

c)

land slides on the moon

d)

flooding on the moon

32.

earth does not orbits around the sun.

a)

true

b)

false

33.

moon is a

a)

planet

b)

natural satellite

c)

dwarf planet

d)

comet

34.

gallileo used to observe the objects in the space.

a)

binoculars

b)

camera

c)

telescope

d)

microscope

35.

During a lunar eclipse what color does the moon appear?

a)

black

b)

yellow

c)

white

d)

red

36.

In order to have an eclipse the moon, sun and earth have to be?

a)

below each other

b)

above each other

c)

in alignment

37.

Which eclipse occurs when the moon comes directly between the earth and the sun?

a)

Solar eclipse

b)

lunar eclipse

38.

During lunar eclipse

a)

the sun is blocked by the moon

b)

the moon the blocked by the sun

c)

the sun is blocked by the earth

d)

you are blocked

39.

What type of eclipse is shown in the diagram?

a)

solar eclipse

b)

lunar eclipse

c)

total eclipse

d)

partial eclipse

40.

which phase of the moon you observe in the diagram

a)

new moon

b)

waxing gibbons

c)

full moon

d)

waxing cresent

41.

Name the largest planet

a)

neptune

b)

jupiter

c)

earth

d)

mars

42.

The hottest planet is

a)

mercury

b)

venus

c)

mars

d)

saturn

43.

Which is the only planet known to have life

a)

mars

b)

mercury

c)

earth

d)

uranus

44.

Which is the smallest planet in our solar system

a)

mercury

b)

venus

c)

mars

d)

earth

45.

Which planet has the brightest ring.

a)

jupiter

b)

uranus

c)

saturn

d)

pluto

46.

name the gas giants

a)

jupiter,saturn,neptune,uranus

b)

mercury,earth,venus,mars

47.

The planet which is most distant to the sun.

a)

neptune

b)

saturn

c)

mercury

d)

uranus

48.

An object made up of ice,dust, gas and usually have a tail is called

a)

meteor

b)

asteroid

c)

comet

d)

planet

49.

The belt between the jupiter and mars is called

a)

kuiper

b)

asteroid

c)

comet

d)

star

50.

when the asteroid from the space enters the earth it is called

a)

meteor

b)

shooting star

c)

comet

d)

asteroid