3.4 Causes of Climate Change

What keeps the Earth warm?

• The Sun

• The greenhouse gases

• Both of them

• None of them

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Which of these are greenhouse gases? You may select more than one option.

• Carbon dioxide

• Carbon monoxide

• Methane

• Nitrous oxide

• Oxygen

The greenhouse effect is natural as it helps to sustain (keep) life on earth by trapping heat in the atmosphere.

• False

• True

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NGSS.MS-ESS3-4

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The enhanced greenhouse effect happens when...

• the concentration of greenhouse gases in the atmosphere increases.

• the concentration of greenhouse gases in the atmosphere decreases.

• the concentration of greenhouse gases in the atmosphere stays constant.

• the concentration of greenhouse gases in the atmosphere fluctuates.

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NGSS.MS-ESS3-5

Which of the following is contributing to an INCREASE in carbon dioxide in the atmosphere?

• deforestation

• photosynthesis

• oceans

• all of the above

• the loss of animal species

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NGSS.HS-ESS2-6

NGSS.HS-ESS3-5

The enhanced greenhouse effect leads to ___.

• global cooling

• global warming

• global dimming

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NGSS.MS-ESS2-6

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Which of the following is the main cause of the enhanced greenhouse effect?

• Increase in sunspots

• Volcanic eruptions

• Human activities that emit greenhouse gases

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NGSS.HS-ESS2-4

NGSS.HS-ESS3-6

Climate change is the gradual ________ of average temperature in the atmosphere.

• increase

• decrease

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NGSS.MS-ESS2-6

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Which is a natural source of greenhouse gases that cause climate change?

• burning fossil fuels

• deforestation

• volcanic eruptions

What happened in the late 1700's- early 1800's that caused carbon dioxide levels increase significantly?

• New factories were being built that caused more pollution (Industrial revolution)

• The civil war caused more pollution

• Scientists figured out how to clean up pollution in the air

• It did not increase

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NGSS.MS-ESS3-4