Chapter 7 - Comparative Planetology Flashcards
1
Q
List the planets in order by their distance from the sun
A
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
2
Q
Do all planets have rings?
A
No. Only the Jovian planets - Saturn, Jupiter, Uranus and Neptune
3
Q
Do all planets have moons?
A
No - Mercury and Venus do not have moons
4
Q
The sun’s mass is what % of all solar system material?
A
99.9%
5
Q
What is the definition of a planet?
A
- It must orbit a star
- It must be large enough that its own gravity has made it spherical
- It must have swept clear its orbit
