Human Uses of Energy

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What are fossil fuels?

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Fossil fuels are natural substances formed from the remains of ancient plants and animals, used as energy sources. Examples include coal, oil, and natural gas.

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What is the primary source of energy for Earth?

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The primary source of energy for Earth is the Sun.

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What does nonrenewable mean?

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Nonrenewable refers to resources that cannot be replaced quickly or are finite, such as fossil fuels.

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What is renewable energy?

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Renewable energy comes from sources that can be replenished naturally, like solar, wind, and hydro energy.

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How do fossil fuels contribute to air pollution?

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When fossil fuels are burned for energy, they release pollutants into the air, contributing to air pollution.

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What is chemical energy?

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Chemical energy is the energy stored in the bonds of chemical compounds, like food or fuel.

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What happens in a nuclear power plant?

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In a nuclear power plant, uranium atoms are split apart in a reactor to produce heat energy.

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What is kinetic energy?

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Kinetic energy is the energy of motion. For example, a moving car has kinetic energy.

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What is geothermal energy?

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Geothermal energy is heat energy generated and stored in the Earth, often used for heating and electricity.

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What is the difference between renewable and nonrenewable resources?

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Renewable resources can be replenished naturally (like solar energy), while nonrenewable resources cannot (like fossil fuels).