Human Impact on Climate (NEW)

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What are greenhouse gases?

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Greenhouse gases are gases in Earth's atmosphere that trap heat. They include carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O).

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How do greenhouse gases affect Earth's temperature?

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Greenhouse gases trap heat in the atmosphere, leading to an increase in Earth's surface temperature, a phenomenon known as the greenhouse effect.

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What is the greenhouse effect?

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The greenhouse effect is the process by which greenhouse gases absorb and re-radiate infrared radiation, warming the Earth's surface.

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What happens to infrared radiation when it encounters greenhouse gases?

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It gets absorbed and re-radiated.

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What happens to visible light (sunlight) when it encounters greenhouse gases?

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It passes right through.

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What is the impact of melting freshwater glaciers on ocean salinity?

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It decreases salinity levels in adjacent ocean waters.

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What human activities contribute to the increase of greenhouse gases?

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Activities such as burning fossil fuels, deforestation, and using chemical fertilizers contribute to the increase of greenhouse gases.

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What is the relationship between carbon dioxide levels and global temperatures?

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As carbon dioxide levels increase, global temperatures tend to rise due to enhanced greenhouse effect.

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What role do forests play in climate regulation?

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Forests absorb carbon dioxide, helping to mitigate climate change by reducing greenhouse gas concentrations in the atmosphere.

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What is the significance of the carbon cycle?

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The carbon cycle is the process by which carbon is exchanged among the atmosphere, land, and oceans, playing a crucial role in regulating Earth's climate.