P2U2 Greenhouse Effect

These are all important greenhouse gases.

• Oxygen, hydrogen and nitrogen
• Carbon dioxide, helium and clouds
• Carbon dioxide, water vapour and methane
• Methane, ethane and hydrogen

The Greenhouse gases are mostly absorbed by this type of radiation.

• shortwave

• longwave

• ultra-violet

• blue

This gas is produced when buried organic material such as plants rot in the absence of oxygen

• methane
• carbon dioxide
• carbon monoxide
• sulphur dioxide

What do we call destabilising influences that can force atmospheric temperatures to either rise or fall

• accidents

• eustatic changes

• feedback circles

• feedback loops

Select the correct statement about climate change

• It is only caused by human activities.
• It is caused by both natural and human activities
• It is never caused by natural phenomena
• It is certainly not happening

True or False? Global dimming is causing a cooling down of atmospheric temperatures.

• True
• False

The historical record often shows cold summers after a major volcanic eruption. What is the reason for this phenomenon?

• The carbon dioxide from the volcano is causing cooler temperatures.
• The volcano lets heat escape from the Earth.
• The eruption blasts ash into the atmosphere which results in global dimming.
• The connection is unclear.

True or False? 

• Long waves from the sun is reflected from the surface of the Earth.
• Long waves is re-radiated by the heated surface of the Earth
• Short waves from the Sun is re-radiated from the Earth's surface.
• Sort waves from the Sun are absorbed by greenhouse gases

An example of a major volcanic eruption that had affected global temperatures around 1991-1992.

• Mount Pinatubo
• Krakatoa
• The Iceland volcano that few people could pronounce.
• Mount Baker near Vancouver

How long ago did the previous Ice Age (Pleistocene)  end?

• 40 000 years
• 12 000 000 years
• 1 000 000 years
• 12 000 years