Physical Science

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What is a dependent variable?

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A dependent variable is the variable that is measured in an experiment or study, which changes in response to the independent variable.

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NGSS.MS-PS2-2

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What are the three main fossil fuels?

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The three main fossil fuels are natural gas, oil, and coal.

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NGSS.MS-ESS2-1

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What is the primary source of air pollution?

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The primary sources of air pollution are vehicles and industrial activities.

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NGSS.MS-ESS3-3

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What is water pollution?

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Water pollution is the contamination of water bodies, such as lakes, rivers, and oceans, caused by harmful substances.

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NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

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What are some common causes of water pollution?

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Common causes of water pollution include household waste, oil spills, agricultural runoff, and industrial discharge.

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NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

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What is the role of solar energy in environmental sustainability?

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Solar energy is a renewable energy source that helps reduce reliance on fossil fuels and decreases greenhouse gas emissions.

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NGSS.HS-ESS3-4

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Define renewable energy.

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Renewable energy is energy that is collected from resources that are naturally replenished, such as sunlight, wind, rain, tides, waves, and geothermal heat.

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What is the greenhouse effect?

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The greenhouse effect is the warming of Earth's surface due to the trapping of heat by greenhouse gases in the atmosphere.

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NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

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What are greenhouse gases?

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Greenhouse gases are gases that trap heat in the atmosphere, including carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O).

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NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

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What is the significance of conservation?

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Conservation is the sustainable management of natural resources to prevent depletion and ensure their availability for future generations.

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NGSS.MS-LS2-5