Energy and Resources

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fuel

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A substance that is burned to produce heat or electricity. Fuels can be used to heat homes, make vehicles move, or generate electricity.

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hydropower

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Electricity generated from flowing water. A limitation of hydropower is that dams put aquatic animals at risk.

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natural resource

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A resource found in the natural world. Trees, animals, coal, and water are natural resources.

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calcite

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A mineral used to make cement.

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silica

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A mineral used to make glass.

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iron

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A metal obtained from ores.

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copper

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A metal obtained from ores.

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primary energy resource

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A natural resource that can be used as a source of energy. Primary energy resources provide energy that can be changed into other, more useful forms.

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property

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A feature such as color, size, weight, texture, or hardness. Jewelry is often made from metals because of their properties, such as hardness and shininess.

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renewable energy

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Energy that comes from a renewable resource. Renewable energy resources include solar, hydro, and wind power.