Greenhouse Gases

When we discuss greenhouse gases what is the main one we discuss?

• Methane (CH₄)

• Carbon Dioxide (CO₂)

• Nitrous oxide (N₂O)

• Flourinated gases

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Which of the following are greenhouse gases?

• Carbon dioxide

• Methane

• Water vapor

• All answers are correct

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Certain gases in the atmosphere – water vapor, carbon dioxide, methane and nitrous oxide – help maintain the Earth’s temperatures and climate. These are called: __________ .

• ozone gases

• solar gases

• greenhouse gases 

• stomach gases

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The main human activity that releases greenhouse gases is...

• using bottled water

• burning fossil fuels

• texting on cellphones

• eating meat

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Water vapor is a greenhouse gas

• True

• False

Some greenhouse gases are naturally present in the Earth's atmosphere

• True

• False

The greenhouse effect comes from

• all heat being released by the earth going back into space

• some of the heat heat being released by the earth going back into space

• some of heat being released by the earth being trapped in the air

• all of heat being released by the earth being trapped in the air

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Over the past 200 years, the level of carbon dioxide in the atmosphere has

• decreased slightly.   

• increased until recently, and then decreased.

• increased steadily.   

• stayed about the same.

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The warming of the atmosphere by the trapping of heat being radiated to space is called

• evaporation

• condensation

• the greenhouse effect

• radiation

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What is the greenhouse effect?

• The warming of a planet due to trapped radiation.

• The cooling of Earth due to air pollution.

• The heating of a solid, such as a rock.

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