P2

Created by

Nicky Wilson

Cards (22)

What are the main energy resources available for use on earth?
Fossil fuels nuclear energy, renewable energy sources (such as solar, wind, hydro, and geothermal).
What are the three fossil fuels
Coal
Oil
Natural gas
What is renewable energy 
A resource that is replenished as it is used
What is non-renewable energy
A resource that is used faster than it can be replenished. It will run out eventually
What uses do we have for energy resources
Transport, electricity generation and heating
What are examples of renewable energy resources
Biofuel
Wind
Hydroelectricity
Goeothermal
Water waves
Tides
The Sun
What are examples of non-renewable energy resources
Coal
Oil
(Natural) Gas
Nuclear fuel
How is electricity generated through wind?
The wind has kinetic energy which turns the blades on a wind turbine. The turbine transfers it to energy
What are the advantages of wind turbines
Renewable
No release of pollutant gases
Does not contribute to global warming
What are the disadvantages of wind turbines
Noise pollution
Visual pollution
Kills birds
Relies on weather and wind
What are advantages of tidal turbines
Renewable
Conserves fossil fuels
No release of pollutant gases
Does not contribute to global warming
What are the disadvantages of tidal turbines
Noise pollution
Visual pollution
Disturbs habitats of coast animals
Low power output
How is electricity generated through geothermal energy
Cold water is pumped into the ground and is heated by hot rocks
The water returns to the surface as stem
The moving stream turns a turbine which turns a generator
What is geothermal energy?
Renewable energy derived from the heat of the Earth's core.
Used to heat water
Generates electricity for transport
What is nuclear energy 
Fission of uranium nuclei that heats water
What is biofuel 
Gases from rotting plant material are burned to heat water
How is electricity generated through hydroelectricity
Water in high level reservoir stores gravitational potential energy
The water flows downhill and has kinetic energy
The water turns a turbine connected to a generator
What are the advantages of hydroelectricity
Renewable
Conserves fossil fuels
No release of pollutant gases
Does not contribute to global warming
Constant reliable power
What are the disadvantages of hydroelectricity
Noise pollution
Visual pollution
Habitat disturbance
Low power output
How is water heated to generate electricity in a solar thermal power station
Water is heated in a boiler which turns into steam
The steam turns a turbine connected to a generator
What are advantages of nuclear fuel
Produces no greenhouse gases
Higher energy density in fuel
Longer operating life
What are the disadvantages of nuclear fuel
Produce radioactive waste
Possibility of accidents
Long start up time
High decommissioning cost