9th Grade Physical Science

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What is Acid Precipitation?

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Acid precipitation refers to any form of precipitation (rain, snow, sleet, or hail) that has a lower pH than normal, making it acidic. It is caused by the release of sulfur dioxide and nitrogen oxides into the atmosphere, which combine with water vapor to form sulfuric and nitric acids.

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What is a Nuclear Reactor?

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A nuclear reactor is a facility where controlled nuclear fission reactions take place to generate heat, which is then used to produce electricity.

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What are Nuclear Wastes?

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Nuclear wastes are the radioactive by-products generated from nuclear reactions, particularly from nuclear power plants. They require careful handling and disposal due to their hazardous nature.

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What is Geothermal Energy?

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Geothermal energy is the thermal energy that comes from the heat stored beneath the Earth's surface. It can be used for heating and to generate electricity.

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What is Tidal Energy?

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Tidal energy is the energy generated from the movement of ocean waters caused by the gravitational pull of the moon and the sun. It can be harnessed to produce electricity.

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What causes Acid Rain?

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Acid rain is caused by the release of sulfur dioxide (SO2) and nitrogen oxides (NOx) into the atmosphere, which react with water vapor to form acids.

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What is the role of a Nuclear Reactor in energy production?

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A nuclear reactor facilitates controlled nuclear fission, which releases a significant amount of energy used to heat water, producing steam that drives turbines to generate electricity.

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What are the environmental impacts of Nuclear Wastes?

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Nuclear wastes can contaminate soil and water, pose health risks to living organisms, and require secure storage for thousands of years to prevent radiation exposure.

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How is Geothermal Energy harnessed?

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Geothermal energy is harnessed by drilling wells into the Earth to access hot water and steam, which can be used directly for heating or to generate electricity.

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What are the advantages of Tidal Energy?

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Tidal energy is renewable, predictable, and has a low environmental impact compared to fossil fuels. It can provide a consistent energy source.