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Grade 3 Science Mid-Term Exam
1.

Instructions: Read each question carefully and choose the best answer.

2.

What do we call a living thing that makes its own food, like a plant?

Select one option
3.

An animal that eats other living things to get energy is called a:

Select one option
4.

What type of living thing breaks down dead plants and animals?

Select one option
5.

When you close a door, you are using a _________ force.

Select one option
6.

What force pulls everything down towards the Earth?

Select one option
7.

When a toy car slows down on a rough carpet, what force is at work?

Select one option
8.

When water turns into a gas and rises into the air, this process is called:

Select one option
9.

When water vapor cools down and turns back into tiny water droplets, forming clouds, it is called:

Select one option
10.

Rain, snow, sleet, or hail falling from the sky is known as:

Select one option
11.

Which state of matter has its own shape and takes up a specific amount of space?

Select one option
12.

Which state of matter takes the shape of its container but keeps its amount of space?

Select one option
13.

Which state of matter spreads out to fill any container it is in?

Select one option
14.

Instructions: Label the numbered parts in the diagrams below.

Diagram A: A Simple Food Chain
1
2
3
4
15.

What is (1)?

16.

What is (2)?

17.

What is (3)?

18.

What is (4)?

Diagram B: The Water Cycle
Water Body
1
2
3
4
19.

What is (1)?

20.

What is (2)?

21.

What is (3)?

22.

What is (4)?

23.

Instructions: Read each question and write a short answer.

24.

What is an ecosystem?

25.

Give an example of something you would 'pull'.

26.

What force makes a ball you throw up in the air come back down?

27.

What is the main source of energy that makes the water cycle work?

28.

Name the three common states of matter.

29.

How is a solid different from a liquid?

30.

Instructions: Read the following scenarios and answer the questions about the simple experiments.

Scenario 1: Plant Growth

Maria wants to see if plants grow taller with more sunlight. She puts one plant in a sunny window and another plant in a dark closet. She gives both plants the same amount of water and soil.

31.

What is Maria trying to find out?

32.

Which plant do you think will grow taller?

33.

What should Maria measure to see which plant grows taller?

Scenario 2: Ball Rolling

David rolls a toy car down a ramp. He wants to see if the type of surface changes how far the car rolls. First, he rolls it on a carpet. Then he rolls it on a smooth wooden floor. He uses the same car and the same ramp each time.

34.

What is David changing in his experiment?

35.

On which surface do you think the car will roll farther? Why?

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