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Energy sources
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______________ energy sources are unlimited.
Renewable
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True or false: we don't have very much uranium left on the Earth.
False! We have enough for many centuries (hundreds and hundreds of years)
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It is almost impossible to replace ________________ energy sources.
nonrenewable
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Nuclear power stations use a radioactive material, called ______________, to generate electricity.
uranium
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What is a disadvantage of using solar energy?
They are only practical in sunny climates
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This is a _____________.
wind turbine
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Name 3 problems that come from using nonrenewable energy sources.
pollution, global warming, habitat destruction, and loss of biodiversity
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Name one advantage and one disadvantage of using crude oil.
It is easy to transport by boat, but oil spills damage the environment and sea animals.
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Name one advantage and one disadvantage of using wind energy.
It is a clean and renewable energy, but it can damage habitats and bird populations.
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Name one disadvantage of using water energy.
habitat destruction, loss of biodiversity
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Name two natural things that are created by geothermal energy.
Volcanoes and hot springs
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This is a ___________.
dam
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_____________ is organic material, such as wood and food waste.
biomass
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What do we do with biomass to generate energy?
We burn it! (to boil water)
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Name three major sources of renewable energy.
sunlight, wind, and water
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What is a disadvantage of using geothermal energy?
We can only use it in areas with volcanic activity
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What is a disadvantage of burning coal?
It creates air pollution.
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True or false: Natural gas burns more cleanly than other energy sources, but it contributes to global warming.
True!
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Name three types of fossil fuels.
coal, crude oil, and natural gas
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Why are radioactive waste products dangerous?
They can cause cancer.
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