Solar System

4. / ____________is a planet in our solar system. It is the smallest of the eight planets.
6. / __________ is the seventh planet from the Sun.
9. / Is the sixth planet from the sun.
10. / Venus has more _____________ than any other planet.
12. / ______________ Is the eighth and farthest known planet from the Sun in the Solar System.
13. / _____________ vapor in the atmosphere plays an important role in the Earth`s weather.
14. / Is the fifth planet from the Sun and the largest in the Solar System.
15. / Jupiter and Saturn are _______ giants; the other two giant planets, Uranus and Neptune are ice giants.
16. / It is theorized that the Earth`s Atmosphere 4.6 billions years ago contained two deadly gases: _____________ and ammonia.

1. / Jupiter is primarily composed of hydrogen with a quarter of its mass being helium, though helium comprises only about a tenth of the number of ___________.
2. / Saturn is the second ___________ planet in our Solar System, after the giant Jupiter.
3. / Mars is the site of Olympus Mons, the largest volcano and second highest known ___________ in the Solar System
5. / Mercury is a little bigger than Earth's moon. It is made of ____________ materials, like iron.
7. / Earth's _____________ and oceans were formed by volcanic activity and outgassing that included water vapor.
8. / Is the fourth planet from the Sun and the second smallest planet in the Solar System after Mercury.
11. / __________ is named after the Roman goddess of love and beauty.