1. The Solar System

2. Formation of the Solar System
The sun and solar system formed from a nebula
Planets are dust and gas that never condensed as part of the sun, yet didn’t become big enough to be stars
Lighter material (gases) formed the outer planets, while heavier material formed the inner planets

4. The Inner Planets Mercury, Venus, Earth and Mars
Terrestrial planets (hard, rocky surface)
More dense than outer planets

5. Mercury Smaller than some moons Almost no atmosphere
Heavily cratered like the Moon

7. Venus Similar in size to Earth Very volcanic
Has a strong “greenhouse effect” with temperatures of 482°C (900°F)
Has retrograde rotation

9. Earth
Only planet known to have life
Liquid Water!

11. Mars Known as the “Red Planet” Evidence of liquid water in the past
Has the largest volcano in the solar system

13. Asteroid Belt Region between Mars and Jupiter
Separates the Inner terrestrial planets from the outer gas planets
Range in size from 950 km in diameter to grains of dust

14. Jovian Planets (Gas Giants)
Jupiter, Saturn, Uranus, Neptune
Composed mostly (or entirely) of gas

15. Jupiter Largest in the solar system Has at least 64 moons
The Great Red Spot is a giant storm

16. Saturn Known for its rings that are made of ice and rock
Has at least 40 moons

17. Uranus Blue-green color from atmosphere of methane Rotates on its side
Has retrograde rotation

18. Neptune Great Dark Spot is a storm
Orbit can be farther from sun than Pluto

19. Pluto Pluto and its moon Charon orbit each other
not visited by spacecraft
Smaller than some moons

21. Complete the following with complete sentences:
Pg 648: 1-5, 8
Pg 653: 3, 6
Pg 659: 3, 5, 6
Pg 664: 5