Energy stores and transfers 4/9/20 Flashcards
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.
