Energy Flashcards
Describe what is meant by fossil fuel
Energy resources created millions of years ago
Name the greenhouse gas that is produced when fossil fuels burn
Carbon dioxide
State the unit do power
Watts
State the unit of energy that electricity companies use
Kilowatt or joules
State the law of conservation of energy
Energy can only be transferred
Name five types of energy store
Chemical energy store Thermal energy store Kinetic energy store Gravitational potential energy store Elastic energy store
State three ways that energy is transferred between stores
Electrical current
Radiation (light)
Waves (sound)
Heating
What does dissipation mean
Wasting energy
Name two ways to reduce dissipation in a car
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