Greenhouse effect

Which of the following are greenhouse gases?

• Carbon dioxide

• Methane

• Water vapor

• All answers are correct

The Earth acts like a greenhouse that catches and traps heat from the sun.

• true
• false

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

• Temperature goes up
• Temperature goes down

Without the Greenhouse Effect the Earth would be

• warm 
• cold
• dead

What is the greenhouse effect?

• The warming of a planet due to trapped radiation.
• The cooling of Earth due to air pollution.
• The heating of a solid, such as a rock.

A super powerful greenhouse gas that traps up to 4 times more heat in Earth's atmosphere is:

• oxygen

• methane

• water vapor

• gasoline

The greenhouse effect is about

• warming the atmosphere because of increased CO₂ levels

• warming the atmosphere because of decreased CO_{2 }levels

• cooing the atmosphere because of increased CO_{2 }levels

• cooling the atmosphere because of decreased CO_{2 }levels

The greenhouse effect is a natural process

• true

• false

The greenhouse effect comes from

• all heat being released by the earth going back into space

• some of the heat heat being released by the earth going back into space

• some of heat being released by the earth being trapped in the air

• all of heat being released by the earth being trapped in the air

Which of the gases is NOT a greenhouse gas?

• water vapour

• carbon monoxide

• carbon dioxide

• methane