9.3 Greenhouse Effect

The two factors that indicate global warming potential(GWP) are

• residence time and infrared absorption

• size of molecule and material

• residence time and size of molecule

• infrared absorption and size of molecule

Which GHG has the greatest global warming potential?

• CO₂

• N₂O

• CH₄

• CFCs

Where does the infrared radiation that warms our planet come from?

• It comes directly from the sun

• It is converted from solar radiation when sunlight hits Earth's surface

• It is converted from solar radiation that is reflected back to earth from the atmosphere.

What is albedo?

• A measure of how well a surface reflects solar radiation

• How much snow is on the ground

• A measure of how ocean currents are moved because of the sun

• A measure of how well the atmosphere and clouds absorb solar ration

What  percent of  incoming solar radiation actually reaches Earth's surface?

• 19%

• 26%

• 45%

• 55%

Which of the following surfaces would have the highest albedo and reflect the most solar radiation?

• a blacktop surface

• a polar icecap

• deep ocean waters

• exposed soil

The natural greenhouse effect is important because without it, Earth would not be able to sustain life.

• True

• False

The greenhouse effect can be thought of as the portion of the infrared radiation that is radiated back to Earth.

• True

• False

Which of the following  is not a source of CO₂ in the atmosphere?

• fossil fuels combustion

• photosynthesis

• decomposition

• deforestation

Which of the following acts as both a greenhouse gas and a depleter of stratospheric ozone?

• CO₂

• CH₄

• CFCs

• N₂O