P2U2 Enhanced greenhouse effect

What is the average temperature of the Earth that is the result of the natural greenhouse effect?

• 0^oC
• 15^oC
• 25^oC
• 30^oC

Complete the sentence: Shortwave radiation from the Sun heat up the Earth, then ....................

• long waves a reflected back to space
• long waves are then re-radiated back into the atmosphere
• shortwaves are reflected back to space.
• shortwaves are re-radiated back into the atmosphere.

An example of long wave radiation is ....

• infra-red
• visible light
• ultra violet
• grape jello purple

This is an example of a greenhouse gas.

• nitrogen
• oxygen
• nitrous oxide
• helium

Atmospheric scientists often point out the “hockey stick” curve as prove of the enhanced greenhouse effect. What is this "hockey stick"?

• The popularity of hockey as a sport in Canada.
• The rise in global temperatures since the last Ice Age.
• The frequent occurrence of ice ages and interglacial periods.
• The rise in temperatures since the Industrial Revolution.

These are the three groups of fossil fuels.

• gasoline, oil and coal
• natural gas, oil and coal
• coal, wood and gas
• plastic, wood and gas

The economic sector that is producing most of the greenhouse gases responsible for the enhanced greenhouse effect.

• agriculture
• industry
• energy
• greenhouses in Outer Mongolia

The country that is producing most of the greenhouse gases responsible for the enhanced greenhouse effect.

• Saudi-Arabia
• USA
• China
• Japan

The main reason why hydro-electric dams are also causing a lot of greenhouse gases.

• The electricity cause sparks that produce ozone.
• The flooded are cause rotting vegetation that releases hydrogen gas.
• Production of cement needed for concrete releases lots of CO₂ when made from limestone 
• The concrete gives off methane as it hardens.

True or False?
The modern fast food industry is causing a rise in methane concentrations because of an increase in cattle numbers. 

• True
• False