Solar System Challenge Practice
| # | Answer |
|---|---|
| 1 | The Sun |
| 2 | 8 |
| 3 | Earth |
| 4 | Mercury, Earth, Mars |
| 5 | Mars |
| 6 | An asteroid |
| 7 | Jupiter |
| 8 | Because Earth spins on its axis |
| 9 | A planet orbits the Sun, while a moon orbits a planet |
| 10 | The Sun is the center of the Solar System. It gives off light and heat, and its gravity keeps the planets moving around it. |