M3 Human Impact on the Environment

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What is air pollution?

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Air pollution refers to the presence of harmful substances in the atmosphere, which can be caused by natural events like volcanic eruptions and human activities such as burning fossil fuels.

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NGSS.MS-ESS3-4

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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, primarily coal, oil, and natural gas, used as energy sources.

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What is photochemical smog?

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Photochemical smog is a type of air pollution that occurs when sunlight reacts with nitrogen oxides and volatile organic compounds, leading to the formation of harmful pollutants.

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How can planting trees help reduce air pollution?

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Planting trees can help reduce air pollution by absorbing carbon dioxide and releasing oxygen, improving air quality.

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NGSS.MS-LS2-3

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What is acid precipitation?

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Acid precipitation refers to rain, snow, or fog that has a lower pH than normal, often caused by sulfur and nitrogen oxides in the atmosphere.

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NGSS.MS-ESS2-5

NGSS.MS-LS2-4

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What are CFCs?

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Chlorofluorocarbons (CFCs) are man-made compounds that can deplete the ozone layer and contribute to air pollution.

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NGSS.MS-ESS3-4

NGSS.MS-PS1-3

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What is the US Clean Water Act?

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The US Clean Water Act is a federal law aimed at regulating the discharge of pollutants into the waters of the United States and ensuring water quality.

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What is the Safe Drinking Water Act?

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The Safe Drinking Water Act is a federal law that protects public health by regulating the nation's public drinking water supply.

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What is the role of nitrogen oxides in air pollution?

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Nitrogen oxides are pollutants that contribute to the formation of smog and acid rain, primarily emitted from vehicles and industrial sources.

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What is particulate matter?

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Particulate matter (PM) consists of tiny particles in the air that can cause health problems when inhaled, often originating from combustion processes.