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Astronomy
Name ______________KEY_________
Standard Deviants THE SOLAR SYSTEM
1. The Sun makes up __99.8___% the mass of the solar system.
2. Almost all of the solar system is made of 2 elements: _hydrogen__ and ___helium___.
3. The FOUR terrestrial planets are ___Mercury_, __Venus__, ___Earth_, and __Mars__.
4. The FOUR Jovian planets are _Jupiter, Saturn, Uranus, and Neptune
5. List 3 characteristics of all the terrestrial planets: (the video has more than 3)
Dense, rocky, small, close to Sun
6. List 3 characteristics of all the Jovian planets: (the video has more than 3)
Giant, gaseous, (thick atmospheres), all have rings
7. Mercury is most similar to the __Moon__; it is geologically ___dead__.
8. The solar wind is made of _positive_ and _negative_ ions.
9. Venus is similar in size and mass to __Earth__.
10. Venus’ high atmospheric temperature and pressure is due to __thick atmosphere__
__(or runaway greenhouse effect)________.
11. How far is one AU (Astronomical Unit)? _93 million_Miles_(_150 million_ km)
12. What gives Mars its reddish color? Iron oxide (rust!)
Other interesting facts:
13. The two Martian moons are believed to be captured ___asteroids__.
14. What makes up the colored clouds in Jupiter’s bands? ____methane and ammonia_____
15. What name do we give to the four largest moons of Jupiter? ____Galilean____
16. The point at which objects are gravitationally torn apart is known as the
____Roche Limit
and is believed to be the source of Saturn’s rings.
17. Who and when discovered Uranus? __William Herschel__ in ___1781__
Other interesting facts:
18. Why is Neptune’s atmosphere more blue than Uranus’? more methane
Other interesting facts:
19. What is so weird about Pluto’s orbit?
Most elliptical and at an angle to the ecliptic,
20. What two planets in the solar system rotate clockwise? Venus, Pluto