Flashcards
E200 1/23
Flashcards do conjunto (23)
- 1What is Heatenergy transferred spontaneously from a hotter body to a colder body
- 2How is heat transferredconduction(solids) convection(liquids and gases) and by radiation
- 3Watt1J/sec 60watts emits 60 joules of energy / second
- 4Jouleheat required to raise temp of 1g of water by .24C
- 5How much energy/m^2 does sun emit340W/m^2 takes 20min to boil 1L from ice
- 6How does earth lose energyemits infrared radiation
- 7What wavelengths are emitted by sunUV and some other ones look on slides
- 8KC + 273.15
- 9Wein's lawwarmer bodies give of radiation at shorter wavelengths than cooler
peak wavelength = 2900/T
T= temp in K - 10temp of sun5800K
- 11Stephen-Boltzmann LawWarmer bodies give off more energy than cooler bodies W/m^-2 = gamma x T^4
- 12Avg temp of earth15C
- 13electromagnetic radiationtravels through vacuum of space
everything gives off electromagnetic radiation if above 0K
warmer bodies give off radiation at shorter than cooler
warmer bodies emit more energy than cooler bodies - 14greenhouse effectsinfrared radiation absorbed by greenhouse gas, they re radiate in all directions
- 15greenhouse gasesWater vapor, CO2, CH4, N2O, O3
- 16Which greenhouse gas absorbs mostH2O
- 17What % of emitted IR from earth absorbed by greenhouse gases70-85%
- 18% emitted from the sun absorbed20-25%
- 19What temp with no greenhouse gases~0F
- 20How much IR emitted from atmosphere to earth398W/m^2
- 21imbalance1W/M^-2
temps rise until 0 - 22Where is excess heat goingOcean(upper and deep), Ice, Land, Atmosphere
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- FlashCards sobre E200 1/23, criado por Jacob Sipple em 21-01-2020.
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- Jacob Sipple
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