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

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)

Do Now

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)

Do Now

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

Do Now

Investigation 17B

• How big is the solar system?

Solar System

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.

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

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

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

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

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

17.2 Saturn• 2nd 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

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

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

17.2 Comparing the planets