Energy Flashcards
1
Q
How can energy stored in food be released?
A
combustion or respiration in our cells.
2
Q
what is the unit for energy?
A
Joules/ J
3
Q
what is the unit for power?
A
Watt/ W
4
Q
how do you find energy in kwh?
A
power in KW * time in hours
5
Q
how do you find the cost of energy?
A
energy used in kwh * cost of 1 KWH
6
Q
what is non-renewable energy?
A
energy resources that cannot be replaced once they are used up.
7
Q
what is renewable energy?
A
energy resources that can be replaced and will never run out.
8
Q
what type of energy resource are fossil fuels?
A
non-renewable energy resources
9
Q
what are some types of fossil fuels?
A
crude oil, coal and gas.
