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SCIENCE GRADE 3 4Q

Total questions: 105

Worksheet time: 58mins

Name
Class
Date
1.
______________________ is any push or pull on an object.
a)
Force
b)
Mass
c)
Gravity
d)
Air Resistance
2.
The girls in this picture represent ________ forces. 
a)
kinetic
b)
balanced
c)
unbalanced
d)
chemical
3.
A _________ uses force to move an object towards you. 
a)
Pull
b)
Push
c)
Motion
d)
Force
4.
A ________ uses force to move an object away from you. 
a)
Push
b)
Pull
c)
Gravity
d)
Motion
5.
The change in a objects position is________.
a)
Force
b)
Motion
c)
Reaction
d)
movement
6.
A force that resists the movement of one surface past another surface.
a)
Acceleration
b)
Gravity
c)
Friction
d)
Lubricant
7.

A push or pull that causes an object. to move

a)

Force

b)

Gravity

c)

Friction

d)

Lubricant

8.
The change in position of an object.
a)
Acceleration
b)
Motion
c)
Equilibrium
d)
Unbalanced Force
9.
What pulls a ball back to earth?
a)
Gas
b)
Gravity
c)
Friction
d)
Molecules
10.

What is the position of the car based on a reference point?

a)

The car is moving.

b)

The tree is a stationary object.

c)

The car is at the left side of the tree.

d)

The car is very fast.

11.

A measure of how fast something moves over a certain distance.

a)

speed

b)

energy

c)

work

d)

force

12.

a force that causes objects to move by touching them

a)

force

b)

energy

c)

non-contact force

d)

contact force

13.

a force that causes objects to move without touching them

a)

energy

b)

speed

c)

non-contact force

d)

contact force

14.

When two magnets attract, they ______________

a)

push apart

b)

change color

c)

get colder

d)

pull together

15.

When two magnets repel, they ________________

a)

change color

b)

pull together

c)

push apart

d)

get colder

16.

Materials with _______________ surfaces have less friction.

a)

smooth

b)

rough

c)

both

17.

A boy sits halfway down a grassy slope. What force stops him sliding down?

a)

Weight

b)

Gravity

c)

Friction

d)

Magnetism

18.

What is gravity?

a)

A force that pulls

b)

A force that pushes

c)

energy

d)

friction

19.

A __ is the area or place where an organism lives in an ecosystem.

a)

habitat

b)

population

20.

3. An ecosystem has

a)

a. animals

b)

b. plants

c)

c. non living - things

d)

d. all of the above

21.

4. What is the study of the interaction of living things with one another and with its environment?

a)

a. community

b)

b. ecosystem

c)

c. ecology

d)

d. population

22.

5. What is the study of the interaction of living things with one another and with its environment?

a)

a. A system that helps animals survive

b)

b. Biotic and Abiotic factors

c)

c. A place with a bunch of dead organism

d)

d. None of the above

23.

7. The kind of interaction in which one organism kills smaller organism for food.

a)

a. mutualism

b)

b. commensalism

c)

c. predation

d)

d. none

24.

Predation occurs when the predator ________________________.

a)

feeds on dead animal matter

b)

captures and kills prey for food

c)

competes with prey for food and shelter

d)

captures and kills prey because they are in its territory

25.

What is a producer?

a)

organism that cannot make their own food so they eat other organisms

b)

organism that makes their own food

c)

organism that break down dead organisms

26.

What is a decomposer?

a)

an organism that breaks down dead organisms for energy

b)

an organism that makes its own food

c)

an organism that eats other organisms

27.

Does a food chain start with the sun?

a)

yes

b)

no

28.

What is a consumer?

a)

an organism that breaks down dead organisms

b)

an organism that makes its own energy and food

c)

an organism that eats other organisms for energy

29.

What is the source of all energy?

a)

water

b)

food

c)

decomposers

d)

sun

30.

If there is a change in the environment, the organism will either die or have to leave

true or false

a)

true

b)

false

31.

An organism that can make its own food

a)

decomposer

b)

producer

c)

consumer

32.

Breaks down and feeds on the remains of other organisms

a)

decomposer

b)

consumer

c)

producer

33.

Small consumers that are hunted and eaten by larger consumers

a)

producer

b)

prey

c)

predator

34.

An animal that hunts and eats other animals for energy

a)

prey

b)

predator

c)

decomposer

35.

NON-living things found in an ecosystem

a)

biotic

b)

abiotc

c)

habitat

36.

LIVING things in an ecosystem

a)

biotic

b)

abiotic

c)

ecosystem

37.

Choose the producer.

a)

rock

b)

tree

c)

cow

d)

bird

38.

Choose the decomposer.

a)

grass

b)

elephant

c)

bacteria

d)

bird

39.

Choose the consumer.

a)

mushroom

b)

horse

c)

tree

d)

grass

40.

Choose the abiotic factor.

a)

sunflower

b)

dog

c)

cat

d)

table

41.

A decomposer is also a producer.

a)

True

b)

False

42.

Which of these living things is a producer?

a)

horse

b)

cow

c)

fly

d)

grass

43.

Mice and grasshoppers are examples of prey.

a)

True

b)

False

44.

Why is the ecosystem important?

a)

It can sustain overpopulation.

b)

It sustains the balance of life in nature.

c)

It allows humans to exploit natural resources.

d)

It can absorb all the toxins humans dispose of.

45.

______ is important for plant growth because plants take in water and mineral salts from this factor.

a)

Light

b)

Temperature

c)

Soil

d)

Air

46.

Plants would need ____________ from the air to make food.

a)

Oxygen

b)

Hydrogen

c)

Temperature

d)

Carbon Dioxide

47.

The __________ of the habitat determines the kinds of organisms living there.

a)

Light

b)

Water

c)

Air

d)

Temperature

48.
__________ is an organism that only eats plants for energy.
a)
Carnivore
b)
Herbivore
c)
Omnivore
d)
Terivore
49.

What is a carnivore?

a)

An animal that eat plants

b)

A plant

c)

A consumer that eats other animals

50.
What is an Omnivore?
a)
An animal that eats humans 
b)
An animal that eats trash
c)
An animal that eats both plants and animals 
d)
An animal that eats dead animals
51.

(a)   is a sphere that contains all the rocks and minerals on the earth.

52.

(a)   is a sphere that contains different layers of gasses.

53.

(a)   is a sphere that contains all living things on Earth; including humans.

54.

(a)   is a sphere that contains all the water on the Earth.

55.

The Greek word Hydro means...

a)

Earth

b)

Life

c)

Water

d)

Air

56.

What is the layer of gas surrounding the Earth called?

a)

Ozone

b)

Atmosphere

c)

Hydrosphere

d)

Lithosphere

57.

A bird flies through the sky. What two spheres are interacting?

a)

Hydrosphere and Biosphere

b)

Biosphere and Geosphere

c)

Atmosphere and Hydrosphere

d)

Biosphere and Atmosphere

58.

A Polar Bear is standing on a glacier. What two spheres are interacting?

a)

Biosphere & Geosphere

b)

Geosphere & Hydrosphere

c)

Atmosphere & Biosphere

d)

  1. Biosphere & Hydrosphere

59.

What are the four major domains or systems of the Earth?

a)

Plants, animals, bacteria, mushrooms

b)

Wind, water, fire, snow

c)

Spring, winter, summer, fall

d)

Geosphere, biosphere, hydrosphere, and atmosphere

60.

What makes up Earth's fresh water? (Choose all correct answers)

a)

Glaciers/ice caps

b)

Oceans

c)

Rivers/streams/lakes

d)

Groundwater

61.

All living things on earth are part of the....

a)

Biosphere

b)

Geosphere

c)

Hydrosphere

62.

Geo =

a)

Ground

b)

Sphere

c)

Life

d)

Water

63.
Hydro = 
a)
Sphere
b)
Earth
c)
Life
d)
Water
64.
The Four Spheres of Earth
a)
are all connected
b)
have nothing to do with one another
c)
exist on Venus and Mars
d)
don't affect human life
65.

Which of these two processes change the water of the hydrosphere from a liquid to a gas and back again?

a)

Weathering and erosion

b)

Evaporation and condensation

c)

Condensation and weathering

66.

What gas makes up most of the earth’s atmosphere

a)

Carbon dioxide

b)

Nitrogen

c)

Oxygen

67.

Which gas makes up the smallest amount of earth’s atmosphere

a)

Carbon dioxide

b)

Nitrogen

c)

Oxygen

68.

What is the first layer of the atmosphere called?

a)

Mesosphere

b)

Thermosphere

c)

Troposphere

d)

Exosphere

69.

The ________ layer is considered outer space.

a)

Stratosphere

b)

Mesosphere

c)

Thermosphere

d)

Exosphere

70.

True or False: The stratosphere is where airplanes fly.

a)

True

b)

False

71.

The thermosphere contains shimmering curtains of light called ______

a)

auroras (Northern Lights)

b)

Rainbows

c)

satellites

72.

What layer of the atmosphere do humans live in?

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

73.

In which layer do meteors or "shooting stars" burn up in?

a)

Exosphere

b)

Mesosphere

c)

Stratosphere

74.

Air is made up mostly of -

a)

Carbon Dioxide and Nitrous

b)

Methane gas and air vapor

c)

Oxygen and Carbon Monoxide

d)

Oxygen and Nitrogen

75.

Weather happens in the _________ layer.

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

d)

Thermosphere

76.

The Ozone Layer is located in the ______

a)

Mesosphere

b)

Stratosphere

c)

Exosphere

77.

Where would I find satellites orbiting?

a)

Exosphere

b)

Thermosphere

c)

Mesosphere

d)

Stratosphere

e)

Troposphere

78.

The hottest layer of the atmosphere:

a)

Thermosphere

b)

Troposphere

c)

Exosphere

d)

Stratosphere

79.

This layer is the most difficult to study and the coldest.

a)

Mesosphere

b)

Thermosphere

c)

Exosphere

80.

Which gas in Earth's atmosphere changes into droplets of water during condensation and eventually develops into clouds?

a)

Carbon Dioxide

b)

Nitrogen

c)

Water vapor

81.

Air pressure is highest in which layer?

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

82.

Which layer of the atmosphere is the thickest?

a)

troposphere

b)

mesosphere

c)

stratosphere

d)

thermosphere

83.

Which layer of the atmosphere is the highest?

a)

exosphere

b)

troposphere

c)

mesosphere

d)

stratosphere

84.

Which layer of the atmosphere is the outermost layer?

a)

exosphere

b)

troposphere

c)

mesosphere

d)

stratosphere

85.

Which layer of the atmosphere is responsible for protecting us from harmful UV radiation?

a)

mesosphere

b)

troposphere

c)

thermosphere

d)

stratosphere

86.

Which layer of the atmosphere is where most weather phenomena occur?

a)

mesosphere

b)

troposphere

c)

thermosphere

d)

stratosphere

87.

Which layer of the atmosphere is where meteors burn up upon entering the Earth's atmosphere?

a)

troposphere

b)

mesosphere

c)

stratosphere

d)

thermosphere

88.
What is weather?
a)
The measure of transparency of the atmosphere.
b)
The condition of Earth's atmosphere at a certain time and place.
c)
Cumulus clouds
d)
Stratus clouds
89.
What is humidity?
a)
Any form of water that falls from the sky to the ground.
b)
A measure of the transparency of the atmosphere.
c)
The condition of Earth's atmosphere at a certain time and place.
d)
The amount of water vapor in the air.
90.
What is temperature?
a)
The measure of how hot or cold something is
b)
The amount of water vapor in the air compared to the amount of water vapor needed to reach saturation.
c)
Air that moves horizontally, or parallel to the ground.
d)
Evaporation
91.
How is temperature measured?
a)
Wind vane
b)
Thermometer
c)
Barometer
d)
Rain guage
92.
What is precipitation?
a)
Any form of water that falls to Earth's surface from the clouds.
b)
Amount of water vapor in the air.
c)
Force of air molecules pushing on an area.
d)
Wind speed
93.
How do we measure wind speed?
a)
Wind vane
b)
Anemometer
c)
Cumulus
d)
Barometer
94.

The amount of moisture in the air is called...

a)

wind

b)

hail

c)

humidity

d)

temperature

95.

Which is NOT a type of precipitation?

a)

hail

b)

fog

c)

sleet

d)

snow

96.

Low air pressure usually means...

a)

sunny weather

b)

rainy weather

c)

partly cloudy weather

d)

hot weather

97.

  1. What is wind?

a)

  1. a) Moving air

b)

  1. b) Falling leaves

c)

  1. c) Water droplets

d)

  1. d) Snowflakes

98.

  1. What are clouds made of?

a)

  1. a) Cotton candy

b)
c) Sun rays
c)
b) Windmill blades
d)

  1. d) Tiny water droplets or ice

99.

true or false : more evaporation equals less humidity

a)

true

b)

false

100.

What causes wind

a)

rain

b)

earth's rotation

c)

hail

d)

pressure difference

101.

true or false: precipitation is any form of water that falls to earths surface from the clouds

a)

true

b)

false

102.

Does evaporation happen before or after condensation?

a)

before

b)

after

c)

during

103.

the amount of water vapor in the air

a)

humidity

b)

air pressure

c)

dew point

d)

climate

104.

the movement of air caused by differences in air pressure

a)

wind

b)

weather

c)

precipitation

d)

humidity

105.

a collection of small water droplets or ice crystals suspended in the air, which forms when the air is cooled and condensation occurs

a)

wind

b)

dew point

c)

visibility

d)

clouds

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