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Terms in this set (22)
Greenhouse gas cycle
Steps in the greenhouse effect
1.radiation from the sun is short wave ultraviolet and visible radiation.
2. Some radiation absorbed by the earths atmosphere.
3. Some radiation is reflected back into space by earths surface.
4. radiation which is reflected back into space is infrared radiation and has a longer wavelength.
5. greenhouse gases in the atmosphere absorb some infrared radiation and re-reflect it back to earth.
6. This causes the green house effect and results in an increase in average mean temperatures on earth.
7. A rise in greenhouse gases results in an increase of the green house effect which can be disastrous for the planet.
Definition of greenhouse effect
A planets ability to use its atmosphere to retain heat and keep warm even when no sunlight is hitting the surface.
What are the most significant greenhouse gases
Carbon dioxide and water vapour
Less significant greenhouse gases
Methane and Nitrus Oxide
What factors effect the impact of the gases
Concentration in the atmosphere and its ability to absorb long wave radiation.
What type of radiation does the warmed earth emit
What type of radiation wave is absorbed by greenhouse gases
What factors does the concentrations of greenhouse gases effect earth
Global temperatures and climate patterns
Why do some people believe that humans are causing global warming
There is a correlation between the concentration of carbon dioxide in the atmosphere and average global temperatures since the industrial revolution
What does an increased concentration of carbon dioxide threaten
Carbon Dioxide (CO2)
incombustible gas present in the atmosphere and formed during respiration, the decomposition and combustion of organic compounds, and in the reaction of acids with carbonates.
flammable gas that is the major constituent of natural gas, which is used as a fuel, and is an important source of hydrogen and a wide variety of organic compounds.
a collection of tiny solid or liquid particles in the atmosphere that can come from natural sources (such as wildfires) or people's activities (such as burning fossil fuels). Some aerosols make the atmosphere warmer because they absorb energy. Others have a cooling effect because they reflect sunlight back into space.
Nitrus Oxide (NOx)
greenhouse gas that occurs both naturally and as a result of people's activities. Major sources include farming practices (such as using fertilizers) that add extra nitrogen to the soil, burning fossil fuels, and certain industrial processes.
Water vapour (H2O)
water that is present in the atmosphere as a gas, and as a greenhouse gas it plays an important role in the natural greenhouse effect.
What type of radiation comes from the sun
Some heat that the greenhouse gases trap escapes to space. What type of heat is this?
Where is UV light converted to long-wave infrared radiation
On the earths surface
State the precautionary principle
if the effects of a human-induced change would be very large. Those responsible for the change must prove that it will not do harm before proceeding
What are some general effects of global warming
More intense and frequent droughts, Flooding, rising sea levels, less food production, more disease, loss of biodiversity, extreme climate conditions
How can general effect of global warming be prevented
Use fewer fossil fuels, use nuclear power and renewable energy sources such as solar, wind or biofuel, better home insulation, stop deforestation
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