P3 Energy Rescources Flashcards
How are energy demands mostly met
By burning oil, coal and gas
What other fuels are used to meet our demands of energy
Biofuels, renewable energy and nuclear power generate some enegy we use
What’s used as the fuel in nuclear power stations
Uranium and plutonium
How does the amount of energy released of 1kg of uranium and plotonuim compare to fossil fuels
Uranium and plutonium relases mcuh more energy
Are biofuels recyclable
Yes
What are two examples of biofuels and what can they be used for
Methane and Ethanol
Can be used to generate electricity
What’s a wind turbine
An electrical generator on top of a tall tower (hill)
How do waves generate energy
By turning a floating generator
How do hydroelectricity generators create electricity
They are turned by the water that flows/runs down hill
How does tidal power stations generate electricity
They trap each high tide and uses it turn generators
What are Solar cells
Flat solid cells and use the Sun’s energy to generate electricity directly.
What do solar heating panels use the Sun’s energy for?
To heat water directly
Where does geothermal energy come from
The energy transferred by radioactive substances deep inside the Earth.
What happens in a geothermal power station
Water is pumped into hot rocks underground, which produces steam to deprive turbines at the Earth’s surface that generates electricity
What do fossil fuels promote
The level of greenhouse gases, which could cause global warming
