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semester exam review

objects revolving around the sun that are too small and too numerous to be planets asteroid
the transfer of energy by the sun solar radiation
a chunk of rock or dust in space meteoroid
the mixture of gases around the earth atmosphere
a ball of ice or dust whose orbit is a long, narrow ellipse comet
the force of gravitational pull on an object. weight
a sun with it's associated planets,asteroids,meteoroids,moons and dwarf planets solar system
amount of matter in an object mass
force that pulls objects toward each other gravitational pull
nearly weightless effect on objects micro-gravity
use of relative movement & gravity of a planet to alter the path & speed of a spacecraft slingshot effect
microbes that can live in harsh conditions extremophile
Created by: rskonieczny98