formation of the moon
material collected after large collision between earth + mars-sized protoplanet
maria
smooth, dark gray lowland region of the moon
highlands
heavily cratered light gray regions of the moon
primary earthquakes
go through solids and liquids
secondary earthquakes
go through solids only
differentiation
dense materials sink
greenhouse effect
sun heats planet but outgoing infrared radiation cools planet
prevents the planet from cooling
CO2 and water vapor block the infrared radiation
Greenhouse effect on earth
earth would be 35 k colder without greenhouse gasses
greenhouse effect on venus
makes venus 400 k hotter
Coriolis effect
makes large storms spin