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9 Cards in this Set

  • Front
  • Back
1 Energy
3 basic forms of energy
1. electromagnetic - sunlight
2. Chemical bond energy - stored in the bonds in between atoms of organic molecules
3. Heat - in as electromagentic - > stored as checmical bond -> out as heat
- flow thru the system but Energy does not cycle. Must be supplied frome xternal source - SUN - it is electromagentic energy
Photosynthesis - the process of converting electromagnetic energy into chemical bond energy
All living things do a process of respiration, the stored (chemical bond energy) is released as heat and eventually mives from ecosystem to outer space
4. Amount of energy headed for earth . How much for photosynthesis?
Less that 1% of the original total is converted to chemical energy by plants.(for photosynthesis)
42% - clouds and dust
10% - absorbed in atmosphere
34 - heat, winds, ocean - absorbed
14% reflected
5. Solar radiation causes wind and rain - how
The surface is heated unevently. So WIND - hot air raises, cool air comes behind and takes its place
Rain -warm air near the surface holds more vapor (moisture( than cool air in atmosphere so as hor air raises, the moisture condenses into clouds and as droplets get heavy enough, precipitation occurs
Greenhouse effect
What is the greenhouse effect? When CO2 and other gases absorb infrared rays, forming a kind of "heat blanket" around the earth.
2 reations that convert one form of energy into enother
Photosynthesis (converts electromagnetic to chemical bond)
Respiration (converts chemical bond to heat)
the Greenhouse effect
the greenhouse effect: the Earth absorbs solar radiation in short wavelengths, and then radiates it in longer wavelengths which are absorbed in the atmospheric gases, but are then radiated either back to earth or skyward. the earth's atmosphere allows shorter wavelengths to enter, and get absorbed by the gases and earth's surface that gives off longer wavelengths which become trapped in the earth's atmosphere.