conservation of energy Flashcards
1
Q
if the input energy is electricity into a bulb, what are the useful and wasteful energy’s?
A
useful: light
wasteful: heat
2
Q
what is conservation of energy?
A
energy can be transferred but not created or destroyed
3
Q
in what form does waste energy come in?
A
- light
- sound
- heat
4
Q
how do you stop heat loss in homes?
A
- thicker walls
- double glazed windows
- insulation in walls
5
Q
what are the different types of energy sources?
A
- fossil fuels
- wind
- solar
- nuclear fuel
6
Q
why are renewable energy hard to find?
A
they are finite and limited
7
Q
why are fossil fuels a good source of energy?
A
they are easy to mine, they provide a lot of energy
