Global warming

What is the greenhouse effect?

• warming of the earth due to gases in our atmosphere.
• cooling of the earth due to gases in our atmosphere

We need the natural greenhouse effect for Earth to be habitable.

• True
• False

The enhanced greenhouse effect leads to global warming.

• True
• False

What are the 5 main greenhouse gases?

• CO2, N2O, CH4, H2O, O3
• CO2, NO2, NH4, H2O, O2

Which of the following sets of evidence supports global warming?

• CO2 levels rising
• Sea Levels rising
• Glacier mass decreasing
• All of the Above

The following graph tells us what?

• Sea Levels are decreasing.
• Sea Levels are rising.

What temperature would Earth be with no greenhouse effect?

• 25 degrees C
• 50 degrees C
• -18 degrees C
• 0 degrees C

What are some predictions about local changes brought on by global warming?

• More severe thunderstorms
• Days warming faster than nights
• Rising sea levels
• All of the above

What would happen if greenhouse gases destroyed Earth's ozone layer?

• Radiation exposure would increase
• liquid water would vaporize
• we might have solar flares
• all of the above

Climate is defined as...

• a change in weather/temperature over a long period of time.
• a change in density over a long period of time.