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9
Science
8th Grade
10/10/2012
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Term
what is collision theory?
 Definition
4.5 million years ago, a object the size of a planet collided with earth. it hit off the center or angle
Term
object that crashed and took pictures of the moon
 Definition
Luna 1
Term
first object in space
 Definition
Sputnik
Term
First man to space
 Definition
John glenn
Term
apogee
 Definition
farthest away
Term
perigee
 Definition
closest
Term
how many tides are there?
 Definition
2 high 2 low = 4
Term
Highlands
 Definition
oldest rock
Term
Maria
 Definition
Youngest rock
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