8.2.8 Climate Change

Climate Change

8.2.8

​Page 82

• Relate the release of carbon from fossil fuels to changing environmental conditions

• Explain how carbon dioxide levels in the atmosphere affect the behavior of EM waves

Today we will...

Dropdown

The ​

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plays a vital role in regulating Earth's climate, but excessive ​

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of ​

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are causing significant ​

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impacts.

Draw

Draw the rest of the line to predict the temperatures for the future.

Hotspot

Did any of these lines match your prediction?

Definition: a gas that traps energy from sunlight in Earth's atmosphere.
Examples: carbon dioxide, methane, water vapor, nitrous oxide.

Greenhouse Gases

Multiple Choice

Look at the pie chart that shows gases in Earth's atmosphere!

Which of these gases does Earth's atmosphere contain the least of?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Argon

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Some people think that global warming is not the result of human activity.

Earth goes through many natural warming and cooling cycles.

Earth has gone through many natural warming periods that occurred slowly over millions of years.

Cause

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Effect 2

Effect 4

Effect 3

Carbon emissions build up in the atmosphere, trapping energy from the sun

Effect 1

Multiple Choice

Burning fossil fuels releases carbon emissions into the atmosphere. That carbon dioxide traps energy from sunlight.

Which of the following will most likely happen if humans continue to burn fossil fuels for energy?

• Polar ice caps will expand, gaining more ice.

• Warmer temperatures will increase the food produced on farms.

• The sea level will rise, covering cities.

• More clouds will form in the atmosphere, cooling Earth.

Multiple Select

Which of the following are examples of alternative energy?

• Solar

• Wind

• Hydropower

• Nuclear

Match

Match the following

• Carbon dioxide emissions from fossil fuels cause climate change.

• A graph of carbon dioxide levels throughout history shows that carbon dioxide levels have risen very quickly in the last hundred years. A graph of average global temperature shows that the temperature on Earth has increased very quickly in the last 100 years.

• Fossil fuels release carbon dioxide when burned. Carbon dioxide is a greenhouse gas that traps energy from sunlight. As the carbon dioxide in the atmosphere increased, it trapped more energy. Earth's temperature increased due to the extra energy.

Claim

Evidence

Reasoning

• Claim

• Evidence

• Reasoning