2. 1._____type of eclipse that occurs when the moon cast a shadow on the Earth (eclipses) 2.____the force that keeps planets from being pulled into the sun (rotation/revolution) 3.____the spinning motion of Earth to rotate on its axis (rotation/revolution) 4.____sun centered theory of the solar system (astronomers) 5.____when did the universe begin (big bang) RAP

3. 1._____type of eclipse that occurs when the moon cast a shadow on the Earth (eclipse) 2.____the direction that the moon revolves around the Earth (moon phases) 3.____length of time it takes the Earth to revolve around the sun (rot/rev) 4.____a dense massive ball of gases exploded and the universe began (big bang) 5.____has seasons, polar ice caps, deserts, and windstorms like Earth (planets) RAP

4. 1._____type of eclipse that occurs when the moon cast a shadow on the Earth 2.____phase of the moon that is after waxing gibbous 3.____forms from a collapsing nebula 4.____closest planet to the sun 5.____sun centered theory of the solar system RAP

5. Investigation 17B How big is the solar system? Solar System

6. 17.2 The planets The planets are commonly classified in two groups. The terrestrial planets include Mercury, Venus, Earth, and Mars. The gas giants include Jupiter, Saturn, Uranus, and Neptune.

7. 17.2 Mercury closest to sun Smallest Craters Flat plains Facing sun-hot Not facing sun-cold Atmosphere-none Moons-none Rot-59 days Rev-88 days

9. 17.2 Venus Hottest planet Earth’s twin Phases Brightest planet Volcanoes Atmosphere-thick made of carbon dioxide Moons-none Rot-243 days Rev-225 days

11. 17.2 Earth Liquid water Life Called the Blue Planet Seasons Atmosphere-78% nitrogen, 21% oxygen, 1%t trace gases Moons-1 (Luna) Rot-24 hours Rev-365 ¼ days

13. 17.2 Mars Called the Red Planet Polar ice caps Seasons volcanoes, deserts, wind storms, craters Atmosphere-thin and made of carbon dioxide Moons-2 Rot-24 hours Rev-687 days

15. 17.2 Jupiter Largest planet Great Red Spot( storm system( Has rings Atmosphere-made of hydrogen and helium Moons-63 Rot-10 hours Rev-11.9 years

17. 17.2 Saturn 2 nd largest planet Largest set of rings (made of rocks and ice) Called Jewel Planet Atmosphere-made of hydrogen and helium Moons-60 Rot-10.7 hours Rev-29.5 years

19. 17.2 Uranus Rotates-backwards from top to bottom Thin rings Blue green disk Atmosphere-made of hydrogen and helium Moons-27 Rot-18 hours Rev-84 years

20. 17.2 Neptune Farthest planet from the sun Set of narrow rings Great Dark Spot (storm system) has rings Atmosphere-made of hydrogen and helium Moons13 Rot-16 hours Rev-165 years

22. 17.2 Comparing the planets

23. 1._____type of eclipse that occurs when the Earth cast a shadow on the moon (eclipses) 2.____type of galaxy the Milky Way is (Milky Way) 3.____giant clouds of dust and gas that form solar systems (big bang) 4.____hottest planet (planets) 5.____ type of moon that occurs during a lunar eclipse (eclipse) Do Now