Term
How do we mainly generate electricity? |
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Definition
In a power station. Fuels are burned to heat water in a boiler to produce steam. This turns a turbine that turns an electricity generator. |
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Term
Why is nuclear power more efficient? |
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Definition
Much more energy is released per kilogram from Uranium than from fossil fuel. |
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Term
How is electricity obtained from a nuclear power station? |
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Definition
A uranium atom is unstable and can be split into two releasing energy. This is called Nuclear Fission. |
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Term
What are the problems with nuclear power? |
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Definition
Expensive to build and maintain Take longer to start up. You need to process the uranium before you use it, which causes pollution. Radioactive waste is difficult to dispose of safely. Nuclear power stations might be a target for terrorists.
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Term
How else can energy be produced? (6) |
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Definition
Wind Power Wave Power Hydroelectric Power Tidal Power Solar power Geothermal
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Term
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Definition
An electricity generator on top of a tall tower |
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Term
What is a wave generator? |
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Definition
A floating generated turned by the waves |
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Term
What is a Hydroelectric generator? |
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Definition
A generator turned but water running downhill |
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Term
What is a tidal power station? |
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Definition
It traps water from high tides and uses it to turn generators. |
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Term
How can we use solar power? |
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Definition
We can convert solar energy into electricity using solar cells or use it to heat water directly in solar heating panels. |
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Term
What is Geothermal energy? |
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Definition
Geothermal energy comes from energy released by radioactive substances, deep within the Earth. The energy released by these radioactive substances heats the surrounding rock. As a result, heat is transferred towards the Earth's surface. |
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