Global warming

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 gases 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 absorb 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

Things you can do to help decrease global warming include:

• Eat more ice cream.
• Keep your freezer door open.
• Keep your air conditioner on high.
• Turn off your lights when you’re not using them.

How is the greenhouse effect produced?

• When solar energy trespasses the atmosphere.

• When some energy is reflected back to earth.

• When the green house is burned.

• When the sun doesn't emit radiation.

How are greenhouse gasses harming our environment?

• They aren't

• Less heat is able to escape causing the Earth to cool down

• Less heat is able to escape causing the Earth to warm up

• More heat is able to escape