Energy Flashcards
1
Q
Describe what is meant by fossil fuel
A
Energy resources created millions of years ago
2
Q
Name the greenhouse gas that is produced when fossil fuels burn
A
Carbon dioxide
3
Q
State the unit do power
A
Watts
4
Q
State the unit of energy that electricity companies use
A
Kilowatt or joules
5
Q
State the law of conservation of energy
A
Energy can only be transferred
6
Q
Name five types of energy store
A
Chemical energy store Thermal energy store Kinetic energy store Gravitational potential energy store Elastic energy store
7
Q
State three ways that energy is transferred between stores
A
Electrical current
Radiation (light)
Waves (sound)
Heating
8
Q
What does dissipation mean
A
Wasting energy
9
Q
Name two ways to reduce dissipation in a car
A
Energy in the car can be transferred to thermal energy because of its surroundings. The energy in the chemical store transfers into the kinetic store because of contact and non-contact forces
