Year 8 Science · Unit 3 · Lesson 16

Kinetic Energy

Foundation Worksheet

Name
Date
Class

Learning Goals

Warm Up

Odd one out

Circle the item that does not belong in each group. Then explain why it doesn't fit, what is the rule that the other three share?

#GroupOdd one out + reason
1 mass    speed    colour    direction of motion
2 a rolling ball    flowing water    a compressed spring    a flying bird
3 brakes heating up    tyres squealing    fuel being added    car crumpling on impact
4 doubling speed → KE ×4    tripling speed → KE ×9    doubling mass → KE ×2    halving speed → KE ÷4

Your Turn

True or False? Fix the false ones

Circle T or F for each statement. If the statement is false, rewrite it correctly on the line below.

1. Doubling the speed of a moving object doubles its kinetic energy.

Correct it:

T
F

2. A heavier car has more kinetic energy than a lighter car travelling at the same speed.

Correct it:

T
F

3. A stationary rock on the ground has kinetic energy because it has mass.

Correct it:

T
F

4. When a car brakes to a stop, its kinetic energy is converted to heat and sound.

Correct it:

T
F

5. Speed has a bigger effect on kinetic energy than mass does.

Correct it:

T
F

Show What You Know

1. A cricket ball and a tennis ball are thrown at the same speed. Which one has more kinetic energy? Explain why using your knowledge of how KE depends on mass.

Recall 2 marks

2. Name two safety features built into modern Australian cars that work by managing how kinetic energy is transferred during a crash. For each feature, explain how it reduces injury.

Recall 2 marks

Wrap Up

In one sentence, what was the main idea of this lesson?

HSCScience · Year 8 Science · Unit 3 · Lesson 16 · Foundation Worksheet