| A | B |
|---|
| axis | the imaginary rod the earth spins on |
| rotation | how the earth moves around it's axis (24 hrs) |
| revolution | how the Earth move around the sun (365 days) |
| star | a huge globe of gases tha shines it's own light |
| planet | large object that circles a star and does not produce it's own light |
| comet | an icy ball that contains dust and rock |
| meteors | comes from comets that burn up in our atmosphere |
| meteorite | material that lands on Earth |
| universe | all the matter and energy that exist |
| satellite | natural object that revolve around a planet |
| sun | an average star, in the center of the solar system, that is made up of hydrogen and helium |
| solar system | included planets, moons, the sun, and 7 other plants and their satellites |
| galaxy | a huge collection of stars |
| gravitational attraction | keeps the Earth and the other planet in orbit around the sun |
