space and forces

some quiz......enjoy

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the first four planets are known as the ________ planets
inner
1 of 8
some of the planets natural sattellites are called?
moon
2 of 8
what force keeps the planets in orbits?
Gravity
3 of 8
where are most of the astroid belts?
between Mars and Jupiter
4 of 8
what is the estimated number of galaxies in the universe?
a thousand million
5 of 8
what is a galaxy?
A cluster of million of stars, held closely togethere by gravity
6 of 8
________ are space craft that can visit other planets without the need for astronauts.
space probes
7 of 8
What do stars form from?
nebula
8 of 8

Other cards in this set

Card 2

Front

some of the planets natural sattellites are called?

Back

moon

Card 3

Front

what force keeps the planets in orbits?

Back

Preview of the front of card 3

Card 4

Front

where are most of the astroid belts?

Back

Preview of the front of card 4

Card 5

Front

what is the estimated number of galaxies in the universe?

Back

Preview of the front of card 5
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