GHG and Climate change

The concentration of greenhouse gases in the earth’s atmosphere is directly linked to the average global temperature on Earth.

• True

• False

Carbon dioxide is emitted in the atmosphere directly due to burning of fossil fuel.

• True

• False

Gases that keep the Earth's temperature steady are called

• Greenhouse gases

• atmospheric gases

• Heat gases

• temperature monitors

What gas do human beings breathe out?

• methane

• oxygen

• carbon dioxide

• nitrogen

The enhanced greenhouse effect is sometimes referred to as ________.

• Heat waves

• climate

• global warming

• temperature

Global warming refers to an average _________ in the Earth's temperature, which in turn causes changes in _________.

• increase, climate

• decrease, climate

• increase, temperature

• decrease, temperature

A warmer Earth may lead to

• changes in climate

• a rise in sea level due to the expansion of sea water

• the melting of the ice caps

• All answers mentioned

Greenhouse gases naturally regulate Earth's temperature and are therefore good gases.

• True

• False

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