Global Warming

Which 2 greenhouse gases contribute the MOST to global warming of Earth?

• N₂O and H₂O

• O₃ and H₂O

• CO₂ and CH₄

The main human activity that releases greenhouse gases is

• using bottled water
• burning fossil fuels
• texting on cellphones
• eating meat

The greenhouse gas having the greatest role in human-caused global warming is

• methane
• carbon dioxide
• CFCs (chlorofluorocarbons)
• ozone

Why is the increase of Greenhouse gasses a big issue?

• It causes climate change and increase in the global temerature 
• It can lead to a major increase in Greenhouses 
• It leads to more factories
• It causes a major decrease in people

The gradual increase in the temperature of the atmosphere is known as ________________.

• Greenhouse Effect
• Global Warming
• Carbon Dioxide Gases
• Methane

How can global warming cause sea levels to rise? Choose the best answer.

• by causing it to rain more often
• by melting glaciers and ice caps
• by increasing the number of undersea volcanic eruptions
• by creating bigger and more powerful hurricanes

Why does cutting down trees increase global warming?

• trees soak up carbon dioxide
• trees provide shade which counteracts global warming
• trees absorbs the sun's energy without radiating back into the atmosphere
• trees drain greenhouse gases like methane from soil

What happens to the temperature if more greenhouse gases are released into the atmosphere?

• Temperature goes up
• Temperature goes down

Global warming and the greenhouse effect are exactly the same.

• True
• False

Burning fossil fuels is one of the main causes for global warming.

• True
• False