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11 Cards in this Set

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  • Back
revolve
around the sun, one trip takes one year
rotate
on its axis, takes 24 hours to turn one time making one day and one night
mass
a huge amount of anything
meteorite
stone or metal that falls to the earth from outer space
gravity
a force that holds everything toward the center of the earth
ellipses
the shapes of the planets around the path of the sun
heliocentric
sun centered or measuring from the sun
meteor
matter that enters the earth's atmosphere
Axis
An imaginary line that goes through the center of the earth
matter
anything that has weight and takes up space
orbit
the path the planet follows on its trip around the sun