Conservation of energy Flashcards
Give a few examples of the main types of energy store
Chemical, kinetic, thermal, elastic, gravitational
When there is an energy transfer in a closed system, is there a net change in the total energy in the system?
No, it stays the same
What are the four types of energy transfer?
Mechanical, electrical, thermal, radiation
What is mechanical energy transfer?
An energy transfer over a distance
What is electrical energy transfer?
Energy transfer through an electric current
What is thermal energy transfer?
Energy transfer due to a difference in temperature
What is radiation energy transfer?
Energy transfer through waves
What is energy efficiency?
How good something is at transferring energy into useful forms
What effect does a higher thermal conductivity have on the rate at which it transfers energy?
The higher its thermal conductivity, the faster the rate at which it transfers energy
What is a renewable energy source?
An energy source that will not run out
What is a non-renewable energy source?
An energy source that will run out
Give some examples of renewable energy sources
- Solar cells
- Bio fuels
- Wind turbines
Give some examples of non-renewable energy sources
- Fossil fuels
- Nuclear energy
