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GRADE 4 Natural Science Revision

Total questions: 58

Worksheet time: 33mins

Name
Class
Date
1.

Sound happens when somethings....

a)

has electricity

b)

has gravity

c)

vibrates

2.
Sound is a form of? 
a)
energy
b)
pitch
c)
volume
3.
Measure of how high or low a sound is
a)
amplitude
b)
compression
c)
speed of sound
d)
pitch
4.
An object that does not vibrate cannot produce
a)
sound
b)
light
c)
heat
d)
electricity
5.

What is volume?

a)

how high or low a sound is

b)

the loudness or softness of a sound

c)

the number of vibrations per second

d)

vibrations

6.

What is the definition of Noise Pollution?

a)

Unwanted noise

b)

Excess noise produced by humans

c)

Unwanted noise that distrubs all life

7.

Which answer is a "man made" noise pollution?

a)

Television

b)

Storms

c)

High School Field Trips

d)

Pet Store

8.
Which of these is considered pollution?
a)
Yelling loudly to the person next to you
b)
Using your indoor voice when you talk 
c)
Walking to school
9.
What is gravity?
a)
A force
b)
Energy
c)
A push
d)
All of them
10.
Without gravity we would________. 
a)
Float away
b)
Stay in the ground
c)
Nothing would happen.
d)
I don't know
11.
What is weight?
a)
The measure of how HEAVY something is.
b)
The measure of how much GRAVITY is pulling on an object.
c)
BOTH answers are correct.
d)
None of them.
12.
The spinning of the Earth on its axis that causes night and day.
a)
Rotate
b)
Revolve
13.

The sun and everything that revolves around it.

a)

solar system

b)

galaxy

c)

universe

d)

rotation

14.
The star at the center of our solar system.
a)
Sun
b)
moon
c)
orbit
d)
axis
15.

It takes Earth _________ to make one complete rotation on its axis.

a)

24 hours

b)

365 days

c)

28 days

d)

24 days

16.
It takes Earth _____________ to make one revolution or orbit around the Sun.
a)
365 days
b)
365 hours
c)
28 days
d)
24 hours
17.

It takes about _____________ for the moon to go through all of its phases.

a)

28 days

b)

365 days

c)

24 hours

d)

24 days

18.
A large body made of gas or rock that orbits around a star.
a)
planet
b)
moon
c)
star
d)
super nova
19.

To increase or get bigger.

a)

Waxing

b)

Waning

20.
To decrease or get smaller
a)
waning
b)
waxing
21.
A tool used to make distant objects appear larger, brighter, and sharper.
a)
telescope
b)
planet
c)
moon
d)
microscope
22.

what is a saying for the planets

a)

my very eager mother just served us nachos

b)

my very eager mother just served us no pizza

c)

my mother just served us nachos

23.

The order of the planets is:

a)

Mars,Venus,Earth,

Mercury,Saturn

Jupiter, Uranus, Neptune

b)

Earth,Venus,Mars

Jupiter, Neptune,

Mercury,Saturn,

Uranus

c)

Mercury,Venus,Earth

Mars,Jupiter,

Saturn,Uranus

Neptune

24.
This is the only planet in the solar system with oceans of liquid water.
a)
Mercury
b)
Mars
c)
Venus
d)
Earth
25.
Only planet known to have life
a)
Earth
b)
Mars
c)
Venus
d)
Mercury
26.

Which of the following statements is correct?

a)

Pluto was once classified as a dwarf planet, but is now classified as a main planet

b)

Pluto was never classified as a planet

c)

Pluto has always been considered a planet

d)

Pluto was once considered a planet, but no longer is

27.
How long is a day on earth?
a)
22 hours
b)
365 days
c)
12 hours
d)
24 hours
28.

The season that comes before winter is?

a)

summer

b)

winter

c)

spring

d)

autumn

29.
The earth orbits around the _________
a)
sun
b)
moon
c)
other planets
d)
solar system
30.

Which sentence is false?

a)

When a sound is made, something vibrates

b)

The pitch of a sound shows how high or low the sound is.

c)

Sound can only travel through air, not through liquids or solids.

31.

TRUE or FALSE: Years ago, people believed that the Earth was flat.

a)

True

b)

False

32.

What season do we experience in September in South Africa?

a)

Summer

b)

Autumn

c)

Winter

d)

Spring

33.

Why is there no living things on the moon?

a)

There is no water on the Moon

b)

There is no air on the Moon

c)

Both options are correct

34.

Which is bigger? The Sun or the Earth?

a)

Sun

b)

Earth

35.
What are plants called in a food chain?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Scavengers
36.
Which of the following is a producer?
a)
Maple tree
b)
Sunfish
c)
Bunny
d)
Bear
37.
The  ____________ provides all the initial energy to plants.
a)
sun
b)
moon
c)
environment
d)
water
38.
What do the arrows show in a food chain picture?
a)
They always point to the smallest animals.
b)
They point to the animal that tastes the best.
c)
They always point to the producers.
d)
They point in the direction that energy is flowing.
39.

Which food chain is in the correct order?

a)

bird, caterpillar, plant

b)

bird, caterpillar, plant

c)

plant, caterpillar, bird

d)

caterpillar, bird, plant

40.
A habitat is a specific place that an animal lives.
a)
True
b)
False
41.
What animal would you most likely find in the desert habitat?
a)
Squirrels 
b)
Foxes
c)
Camels
d)
Sharks
42.
Habitats provide all of the following, EXCEPT...
a)
Food
b)
Fun
c)
Water
d)
Shelter
43.

What movement produces DAY and NIGHT?

a)

Rotation

b)

Orbit

44.

What movement produces different seasons?

a)

Rotation

b)

Orbit

45.

How long does Earth's orbit take?

a)

24 hours

b)

365 days

46.
Which continent is highlighted in red?
a)
Antarctica
b)
Australia
c)
Europe
d)
Asia
47.
Africa is which color on the map?
a)
orange
b)
red
c)
blue
d)
green
48.
Number two represents which ocean?
a)
Arctic Ocean
b)
Southern Ocean
c)
Atlantic Ocean
d)
Indian Ocean
49.
Which of the following is true?
a)
Earth is the center of the solar system
b)
The sun orbits the earth
c)
Gravity exists only on Earth
d)
The sun is the center of the solar system
50.
Stars are made of what?
a)
rock
b)
gas
c)
ice
d)
fire
51.
Why does the sun appear to be the largest star in the sky?
a)
It is far away
b)
It is very big
c)
It is the closest star to earth
d)
It is a planet
52.
How many planets are there?
a)
6
b)
7
c)
8
d)
9
53.
The Sun, eight planets, and thousands of stars make up the 
a)
outer planets
b)
inner planets
c)
solar system
d)
light years
54.
_______ is the apparent changing shapes of the Moon 
a)
New Moon
b)
Crescent Moon
c)
Full Moon
d)
Moon Phases
55.
A ______ is when the side of the Moon facing Earth appears lite. 
a)
New Moon
b)
Crescent Moon
c)
Full Moon 
d)
Moon Phases
56.
A ______ is when the side of the Moon facing Earth appears to be not lit. 
a)
New Moon
b)
Crescent Moon
c)
Full Moon
d)
Moon Phases
57.
How long does it take for the Moon to make one full revolution around the Earth? 
a)
one day
b)
one month
c)
one year
d)
never
58.
How would you describe the Moon? 
a)
Smooth surface with an atmosphere but no water
b)
Surface filled with carters and water but no atmosphere
c)
Filled with carters and dust, no water or atmosphere 
d)
The same as Earth 

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