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20 Cards in this Set
- Front
- Back
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What are 2 facts that show that coal mining can harm the environment?
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It can pollute the water.
Caves can collapse. |
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What do we call land that has been returned to productive use?
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reclaimed land
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How is petroleum or natural gas removed for human use?
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By drilling into the land or ocean floor
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What are three problems caused by using fossil fuels?
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Coal mining disturbs the land.
Burning fossil fuel contributes to the greenhouse effect. It causes acid precipitation. |
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Why does oil have to be refined?
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It is a mixture of many products that must be separated.
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What is crude oil?
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It is unrefined oil from the ground.
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What happens to crude oil in the boiler?
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It boils and forms gases.
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What are some types of fuel that come from petroleum?
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gasoline, jet fuel, home-heating fuel, and kerosene
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What is formed if enough heat and pressure are applied to bituminous coal?
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anthracite
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What type of coal has less carbon--bituminous or anthracite?
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bituminous
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Why do we find oil and gas on land even though they were formed from ocean organisms?
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An ocean once covered the land where they are found.
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How does lignite differ from anthracite?
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Anthracite takes longer to form, is harder, contains less water, contains more carbon, and burns cleaner.
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Which fossil fuel is used to produce gasoline that we use in cars?
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petroleum
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What are two proofs that acid precipitation harms ecosystems?
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Smog, which is harmful to humans.
Also, many organisms have died in lakes. |
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Why should we reduce our use of fossil fuels?
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They conribute to the greenhouse effect.
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What is one reason why we use fossil fuels?
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They are cheap and allow a large number of people to have fuel and energy for not much money.
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What are three ways to reduce the use of fossil fuels?
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Ride a bike
Turn off unused appliances Learn about other forms of energy. |
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What are two ways coal is removed from the ground?
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Digging tunnels
Strip mining |
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What is formed from swamp plants?
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coal
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What is often found on top of oil?
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natural gas--it is lighter than oil
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