Ch 10 Atmospheres Flashcards
Sunlight is the only true significant energy source for surface T/F
True
A terrestrial planets interior heat has a lot
To do with its surface temps t/f
False
W/o greenhouse effect a planets global average surface temp would depend on two things
Distance from sun
Overall reflectivity, higher less
Light absorbed, cooler planet. Also called albedo depends on composition and color. Dark reflects less light
Mercury and moon have no atmosphere and thereby have no
Greenhouse effect.
Earths greenhouse effect lets our temps be
31
Degrees warmer
What are two gases that are TRACE parts of Earths atmosphere that cause green house effects
Water vapor and carbon dioxide
What are the more abundant molecules that have no effect on infrared light and do not contribute to greenhouse effect
Nitrogen and oxygen N2 and O2
4 atmospheric structures
Low troposphere temp drops as you go up. Dense
- Stratosphere begins where temps stop dropping, temp starts to rise. Highest part temps fall again
- Thermosphere temps rise at high altitude
- Exosphere atmosphere fades away into space
Scattering (sm Amt) has 2 effects
Sky blue gas molecules scatter blue (more energy)
Sky bright otherwise sun against blk sky
At sunset sunlight must pass thru more atmosphere and blue is scattered away, so we have red left over