The video explains the greenhouse effect, highlighting how atmospheric gases like carbon dioxide and methane trap heat, making Earth habitable. It discusses the necessity of these gases for maintaining Earth's temperature and the consequences of their increased concentration due to human activities. Historical data shows CO2 levels have risen significantly since the industrial revolution, contributing to climate change. The video also clarifies the difference between the greenhouse effect and how real greenhouses function.

What would happen to Earth's surface temperature if it had no atmosphere?

• It would become extremely hot.

• It would become extremely cold.

• It would remain the same.

• It would fluctuate wildly.

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NGSS.HS-ESS2-4

Which of the following gases is NOT a greenhouse gas?

• Carbon dioxide

• Methane

• Oxygen

• Water vapor

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NGSS.HS-ESS2-6

What is the primary function of greenhouse gases in the atmosphere?

• To absorb and re-emit electromagnetic radiation

• To block sunlight from reaching Earth

• To cool down the Earth's surface

• To produce oxygen

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NGSS.HS-ESS3-5

What would Earth's average surface temperature be without greenhouse gases?

• 25 degrees Celsius

• 0 degrees Fahrenheit

• 59 degrees Fahrenheit

• 15 degrees Celsius

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NGSS.HS-ESS2-4

Why is a base level of the greenhouse effect necessary for Earth?

• To increase oxygen levels

• To keep Earth's surface at a habitable temperature

• To reduce carbon dioxide levels

• To prevent global warming

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How do scientists determine historical levels of carbon dioxide?

• By studying animal behavior

• By measuring current atmospheric levels

• By observing plant growth

• By analyzing ice and rock samples

What has been the trend in carbon dioxide levels over the last 800,000 years?

• Remaining stable at 400 parts per million

• Fluctuating between 200 and 300 parts per million

• Constantly increasing

• Constantly decreasing

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NGSS.HS-ESS2-6

NGSS.HS-ESS3-5

NGSS.HS-LS2-5

What major event coincided with the dramatic increase in CO2 emissions?

• The invention of the automobile

• The Industrial Revolution

• The first moon landing

• The discovery of electricity

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NGSS.HS-ESS2-6

NGSS.HS-ESS3-5

How does the metaphorical greenhouse effect differ from an actual greenhouse?

• Actual greenhouses cool the air inside

• Actual greenhouses block all sunlight

• Actual greenhouses are made of metal

• Actual greenhouses trap air, not radiation

What happens to the air inside a real greenhouse?

• It cools down rapidly

• It gets hotter because it cannot mix with outside air

• It circulates freely with outside air

• It becomes more humid

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NGSS.HS-PS3-4