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