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S.E.R.
semester exam review
Question | Answer |
---|---|
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 |