Renewable energy is energy that is collected from renewable resources that are naturally replenished on a human timescale.
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20
In Australia, which resource is likely to last longer before depleted?
Coal
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15
Energy content is measured by
joules/g
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15
Natural gas supplies what % of Australia's energy needs?
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15
Crude oil is made from
Marine plant and animal matter
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20
Define the Greenhouse Effect
The greenhouse effect is the way in which heat is trapped close to Earth's surface by âgreenhouse gases.â These heat-trapping gases can be thought of as a blank
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5
Name a type of fossil fuel
coal, gas, crude oil
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20
Why are biofuels considered to be "better" despite releasing CO2?
They are made of photosynthetic organisms
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15
What is a fossil fuel?
A fossil fuel is a hydrocarbon-containing material formed naturally in the Earth's crust from the remains of dead plants and animals that is extracted and burne
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15
What is the difference between brown and black coal?
Black coal has higher energy content, Brown coal has more impurities
