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Planet Notes Presentation from http://teachers.greenville.k12.sc.u s/sites/ceckles/Pages/Assignment s.aspx By Chance Eckles Introduction • Our solar system formed from a swirling cloud of gas and dust. • The sun -made from the densest matter that became very hot and started to produce its energy by nuclear fusion. Introduction • The remaining matter continued swirling around the sun because of the sun’s gravity and eventually clumped together to make solid forms =planets, moon, and other objects of space. The Planets • In order from the sunMercury; Venus; Earth; Mars (inner) Jupiter; Saturn; Uranus; Neptune (outer) The Planets Mnemonic Device • A silly sentence to help you remember the order of the planets My Very Educated Mother Just Served Us Nachos Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune INNER PLANETS • Mercury, Venus, Earth and Mars. • Terrestrial means “Earth-like” • All have rocky surfaces like Earth. MERCURY • Closest to the Sun. • Thin to no atmosphere • “planet of extremes” • temps range: -170C to 425C • No moons VENUS • • • • Earth’s twin Greenhouse effect “Evening star” Retrograde rotationspins East to West • Carbon dioxide; thick atmosphere • No moons EARTH • 70% water • Atmosphere -mostly Nitrogen • Rotates West to East • 1 moon • 3rd from the sun MARS • “Red Planet” • Ice Caps • Thin atmosphere mostly Carbon Dioxide • 2 moons- Phobos, Deimos • Axis is tilted & has seasons like Earth. OUTER PLANETS • Jupiter, Saturn, Uranus, and Neptune. • “Gas giants” • All have gaseous atmospheres/surfaces. • Have rings. Some rings are more visible than others. JUPITER • Largest of all planets • Has a “Great Red Spot”storm of swirling highpressure gas • Faint rings. • 4 well-known moons- Io, Callisto, Ganymede, Europa SATURN • visible rings made of ice, dust, and rock. • 2nd largest planet • Less dense than water (would float in water) • Largest moon (Titan)- is bigger than Mercury URANUS • Methane Atmosphere • Bluish in color • Rotates from top to bottom (like a tire) • Faint rings that surround the planet vertically (up and down) NEPTUNE • Atmosphere has very visible clouds. • Has a “great dark spot” • Has Faint rings • Last planet • 8th from the sun