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unit three weather

TermDefinition
trophosphere Closest to Earth; where weather happens (clouds, rain); airplanes fly in lower part.
stratosphere Contains the ozone layer; commercial jets sometimes cruise near its lower region; temperature increases with altitude here.
mesospere Meteors burn up here; temperatures decrease with altitude.
thermosphere Auroras occur; very thin air; temperature increases with altitude; satellites begin to orbit in upper parts.
exosphere Outermost layer; very sparse gas; satellites orbit here.
2. The Water Cycle — processes and energy changes
Evaporation Liquid water becomes water vapor. This process absorbs energy (heat from the Sun).
Transpiration Water released from plants into the air; also absorbs energy (driven by heat for evaporation from leaves
Condensation Water vapor cools and forms droplets (clouds). Condensation releases energy into the atmosphere (latent heat).
Precipitation Droplets fall as rain/snow due to gravity — this is driven by gravity.
Surface runoff and infiltration/percolation Water moves across or into the ground; largely driven by gravity.
Sublimation Solid (ice/snow) becomes water vapor, absorbs energy.
Cloud formation and condensation evidence
Condensation requires cooling of water vapor and tiny particles (dust, smoke) called condensation nuclei.
Look at forecast clues: high relative humidity (near 100%), fog, clouds, and precipitation indicate condensation is occurring. For example, 100% relative humidity with fog indicates condensation (water vapor turning into droplets).
Created by: user-1970119
 

 



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