Impact on Climate

What types of data have scientists collected related to climate change?

• Measuring Earth’s current temperature and CO2

• Examining ice/glacier melting

• Taking educated guesses

• The ice caps are getting bigger/growing

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Ethan and Zoe are discussing how increased greenhouse gases affect Earth. What is the impact of these gases?

• Greenhouse gases add a green coloring, which attracts sunlight and makes the planet warmer.

• Greenhouse gases trap heat in the atmosphere, which lowers the temperatures.

• Greenhouse gases trap heat in the atmosphere, which warms the planet.

• Greenhouse gases release heat from the atmosphere, increasing the temperatures.

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Samuel and Nora are discussing the impact of human activities on the environment. Which of the following activities cause a rise in greenhouse gases?

• Removing forests, leading to less CO2 intake

• Emissions from burning fossil fuels such as coal, oil and natural gas

• Increased resource use due to larger human populations

• All of the activities listed contribute to an increase in greenhouse gases

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To help climate change, which of the following strategies would be most effective in reducing the greenhouse effect?

• Increase the use of renewable energy sources.

• Increase the concentration of CO2 in the atmosphere.

• Decrease the amount of water vapor in the atmosphere.

• All of these would reduce the greenhouse effect.

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What is one of the environmental impacts of using fossil fuels for energy?

• They release greenhouse gases, such as carbon dioxide, into the atmosphere.

• They increase the Earth's natural energy reserves.

• They release beneficial gases, like oxygen, into the soil.

• They preserve ancient fossils by keeping them intact.

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Scientists have strong evidence that if the population and human activities continue to rise, and human activities continue to increase...

• Global temperature will continue to rise causing oceans to warm and glaciers to melt

• More fossil fuels will be used/burned, contributing to an increase in greenhouse gases.

• Greenhouse gases will continue to increase, contributing to an even higher average global temperature

• All of the answer choices are plausible effects of increased human population and activity

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These graphs show increases in greenhouse

gasses in Earth’s atmosphere. As levels of

greenhouse gasses have increased, the

temperature of Earth’s surface has risen.

Which change has most likely contributed to a

rise in surface temperatures on Earth?

• The world birth rate dropped to less than 22

  births per 1,000 people per year.

• The president of the United States signed a law

  that created one of the country’s largest nature

  parks.

• Farmers increasingly use chemical fertilizers

  that allow nitrogen and phosphorous to enter

  water sources.

• Humans began using work-saving technologies

  that release carbon dioxide and methane.

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What happens to infrared radiation when it encounters greenhouse gases?

• it gets absorbed and re-radiated

• it passes right through

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How do increased carbon dioxide levels correlate with historical temperature changes?

• They indicate a rise in temperature

• They indicate a drop in temperature

• They provide no information about temperature changes

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As global temperatures continue to change, which of the following statements is most true?

• Humans will be affected but other organisms will not

• Humans and other organisms will not be affected

• Organisms will be affected but humans will not.

• Humans and other organisms will be affected in many different ways

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