P3 Flashcards
2 types of energy resources
Non-renewable
Renewable
Renewable definition -
Unlimited supply of energy from natural resources
Renewable advantages
Never run out
Environmentally friendly as don’t produce greenhouse gases or acid rain
Does not create radioactive waste products
Renewable disadvantages
Don’t supply as much energy
Unreliable
Expensive
What are wind turbines?
Electricity generator on top of tall tower which turns to produce electricity
Wind turbine disadvantage
Noisy
Unsightly
How does wave energy work
Water turns a floating generator
How does hydroelectric power produce energy ?
Generators turned by water running downhill
How does tidal power produce energy ?
Traps high tides and use them to turn generators
How does geothermal power produce energy ? + method
Energy is released by radioactive substances in the earth
Water pumped into hot rocks underground which produces steam to drive turbine at the earths surface that generate electricity
How does biofuel power produce energy ?
Fuel taken form living or recently living organisms
Solar cell panels
Sunlight absorbed and used to make electricity
Solar heating panel
Sun light is used to heat water
Solar energy disadvantages
Expensive
Unreliable
Large area needed
Hydroelectric dams disadvantage
Could result in flooding
Tidal wave power disadvantage
Affects habitats of creatures and plants
Renewable cost to install
Expensive
Renewable cost to run
Cheaper
Nonrenewable cost to install
Cheap
Nonrenewable cost to run
More expensive
Nonrenewable energy definition
Limited supply of energy resources
Two types of Nonrenewable energy resources
Fossil fuels and nuclear power
Three types of fossil fuels
Oil coal gas
Fossil fuel advantages
Reliable
Produces a lot ofEnergy
Cheap
Fossil fuel disadvantages
Releases carbon dioxide which leads to global warming and climate change
Releases sulphur dioxide which can cause acid rain
Will run out
Nuclear power definition
Energy taken from atoms by nuclear fission
What two types of fuel can be used in nuclear power
Uranium or plutonium
Advantages of nuclear power
Produced no greenhouse gases
Produces more energy than fossil fuels
Disadvantages of nuclear power
Radioactive waste is produced
Can be dangerous if there is an explosion as radioactive waste would spread over a wide area
Features that could result in a very of energy demand
Time of day
Time of year