Energy stores and transfers 4/9/20 Flashcards Preview

Science - Year 8 - KS3 > Energy stores and transfers 4/9/20 > Flashcards

Flashcards in Energy stores and transfers 4/9/20 Deck (10)
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1
Q

When is a chemical energy store emptied?

A

When a chemical reaction takes place.

2
Q

When is a kinetic energy store filled?

A

When an object speeds up.

3
Q

When is the gravitational potential store filled?

A

When an object is high up.

4
Q

When is an elastic energy store filled?

A

When an object is stretched or compressed.

5
Q

How is thermal energy store filled?

A

When an object is warmed up.

6
Q

What is the power of a device?

A

The speed at which the object transfers energy.

7
Q

What units express work done?

A

Joules

8
Q

What is work done?

A

Energy transferred when a force moves an object.

9
Q

What increases the work done?

A

Increasing the distance form the pivot.

10
Q

What energy is tansferred when a ball rolls down a hill?

A

Gravitational potential energy turning into kinetic energy.