Energy Stores And Systems Flashcards
1
Q
Energy stores
A
The energy is stored in one of object’s energy stores, before it’s transferred.
2
Q
Energy is transferred…
A
- Mechanically
- electricity
- heating up
- radiation
3
Q
System
A
Single object or a group of objects.
4
Q
When system changes…
A
Energy is transferred. It can be transferred into or away from the system.
5
Q
Work done is another word for…
A
energy transferred.
6
Q
Energy stores:
A
- thermal
- kinetic
- gravitational
- elastic
- chemical
- magnetic
- electrostatic
- nuclear
7
Q
Work done formula
A
J = force(N) x distance (m)
8
Q
1 joule is equal to…
A
1 newton-metre of work done
9
Q
Moving objects have…
A
kinetic energy store
10
Q
Work done is when…
A
the force makes the object move or stop.
11
Q
Elastic potential energy store formula
A
E = 1/2 x k x estention2 (m)
12
Q
Energy can be transferred usefully,
A
stored or dissipate but cannot be created or destoryed.
