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Planet Nine wikipedia , lookup
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Solar System Notes Inner Planets • • • • • Terrestrial Planets Dense & Rocky Smaller Closer to the sun Planets – Mercury – Venus – Earth – Mars Outer Planets • • • • • Gas Giants Large Planets Massive atmospheres Further from the sun Planets – Jupiter – Saturn – Uranus – Neptune Rotation v. Revolution • Rotation – 1 Full Turn on Axis – 1 Day • Revolution – 1 Full Circle Around the Sun – 1 Year Age on Other Planets Activity • Which planet has the fastest rotation? – Jupiter 0.41 Days Most # of Days (12,000 ish) • Which planet has the slowest rotation? – Venus 243 Days Least # of Days (20 ish) • Which planet has the fastest revolution? – Mercury 87.89 Days Most # of Years (56 ish) • Which planet has the slowest revolution? – Pluto 248.59 YEARS Least # of Years (0.05 ish) Mercury: Closest to the Sun • 2nd Smallest • No True Atmosphere – Extreme Temperature changes – Hottest Planet • • • • Most craters No Moon 1 Day = 59 Earth Days 1 Year = 88 Days Venus: Earths Twin? • 2nd Planet from the Sun • Size and Mass similar to Earth • Retrograde Rotation – Rotates opposite from Earth • Densest Atmosphere – Mostly carbon dioxide = Toxic • Slowest period of rotation – 1 day = 243 days – Takes more time to rotate around axis then to revolve once around the sun Earth: An Oasis in Space • 3rd from the Sun • Abundant water and life • Atmosphere causes meteors to burn up Mars: Red Planet • • • • 4th planet from the sun Thinner atmosphere Iron Oxide gives red color Polar ice caps – Frozen carbon dioxide & water Jupiter: Giant • 5th planet from the sun • Largest planet • Atmosphere – Mostly hydrogen & helium • Many Moons • Great Red Spot Huge Storm • Rotates the fastest – 1 day = 10 hours – High winds = Storms Saturn • 6th planet from the sun • Thick outer atmosphere • Large Ring System – Icy particles • Many Moons Uranus: Tilted Planet • 7th planet from the Sun • Thin, dark rings • Blue-Green Color – Methane in Atmosphere • Tipped on its side Neptune: The Blue World • • • • • • 8th planet from the sun Blue-Green Color Dark Colored Storms Layer of Liquid water under atmosphere Very Narrow Rings Strongest Winds Pluto – Mystery “Planet” • • • • • Furthest “Planet” Dwarf Planet Smallest Thin Atmosphere Solid, Icy-Rock Surface