"Our Solar System"

9. There are ______ moons in our solar system.

4. Mercury, Venus, Earth and Mars are mostly made of ______ and _______.

6. Our planet is Moon.

2. All the planets in the solar system will orbit the __________

5. ___________ is the coldest and __________ is the hottest planet.

3. The smallest planet is ___________ and the hottest is ____________.

7. This is ________.

11. Earth have ____ moon.

1. Our Solar System was __________ about 4.5 __________ years ago!

8. _________ is closest to the Sun.

13. This is ________.

14. There are ________ main planets.

10. Moon travel around planets?

12. ___________ is the first human to travel in space.