P2.2.2 - Energy Adds Up

Question 1

Give an example of an elastic store of energy.

Answer 1

A coiled spring or squashed ball.

Question 2

Give an example of a thermal store of energy

Answer 2

ANY hot object

Question 3

Give an example of a gravitational potential store of energy.

Answer 3

ANY object that is high up and could fall

Question 4

Can energy disappear?

Answer 4

No - you can only change it from one form to another.

Question 5

Can you create energy out of nothing?

Answer 5

No - you can only change it from one form to another.

Question 6

What is the ‘law of conservation of energy’?

Answer 6

“Energy cannot be created or destroyed, only transferred from one form to another”

Question 7

When a car burns fuel, energy from the chemical store becomes useful energy such as light and movement. Waste energy is added to the thermal store at the wheels due to friction. Scientists say that energy that is wasted as a thermal store has been…

Answer 7

dissipated.

Question 8

Give an example of a kinetic store of energy

Answer 8

ANY moving object

Question 9

Identify the different energy stores.

Answer 9

• chemical store
• thermal store
• kinetic store
• gravitational potential store
• elastic store

Question 10

Complete the energy tansfer description (red box)

Answer 10

Question 11

Give an example of a chemical store of energy

Answer 11

food

fuel

batteries

Question 12

The different types of energy can be called energy ______

Answer 12

stores