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Exploring The Solar System - Planets, Moons & Asteroids

Learn about the planets in order, Copernicus & Kepler's contributions, rotation vs. revolution, and outer planets like Pluto, Neptune, Uranus, Saturn, and Jupiter. Find out about the Asteroid Belt, AU's, and fascinating meteorites, comets, and inner planets.

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Exploring The Solar System - Planets, Moons & Asteroids

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  1. 14 – 2 The Solar SystemWarm - Up • 1. List the planets in order; include the asteroid belt. • 2. What did Copernicus do? • 3. What did Kepler do? • 4. What is the difference between rotation and revolution?

  2. The Solar System

  3. The Solar System • Solar System – made up of 9 planets(including Pluto) • Including numerous other objects that orbit the sun

  4. Measuring Space • Astronomical Units – AU’s • 150 million km’s • 93 million miles • Distance from Earth to Sun

  5. Outer Planets • Pluto? • Neptune • Uranus • Saturn • Jupiter • Gas Giants • Exception of Pluto • No solid surface • Rings of dust and ice • Exception Pluto • Moons

  6. Pluto • Small rocky frozen crust • Farthest from sun • Smallest • No rings • One moon – Charon (1/2 size of Pluto)

  7. See Ya Pluto! • Pluto is now considered to be a dwarf planet.

  8. Neptune • 8th planet from Sun • Ringed • Pluto occasionally crosses inside Neptune’s orbit • Atmosphere made of methane • Blue / Green Color

  9. Neptune • From 1979-1999 Neptune was further away then Pluto

  10. Uranus • 7th planet from Sun • Axis it tilted horizontally • Thin Rings

  11. Saturn • 6th planet from the sun • Rings made of ice and rock • Size of dust to meters

  12. Saturn • 2nd largest • Least dense – would float in water

  13. Jupiter • 5th planet from the sun • Largest planet • 28 moons • Some larger than Pluto • Io – more active volcanoes than anywhere in solar system

  14. Jupiter • The Great Red Spot - A giant swirling high pressure gas storm in Jupiter’s atmosphere • Much larger than Earth

  15. Asteroid Belt • Between Jupiter and Mars • Might have become planets if not for Jupiter's gravity

  16. Meteoroids, Meteors, Meteorites • Meteoroid: small pieces of rock moving through the solar system • Meteor: Small piece of rock as it passes through the Earths atmosphere • Meteorite: Rock that did not burn up and made it to Earth’s surface.

  17. Comets • Giant dirty snowballs • Made of dust and frozen gases • Ice • Orbit close to sun – Radiation vaporizes materials • Gas and dust forms a tail

  18. Inner Planets • Solid and rocky • Also called “Terrestrial Planets” • Planets closest to the Sun

  19. Mars • 4th planet from the sun • Probes sent to explore planet • Polar ice caps • Signs that once had liquid water

  20. Mars • Red Planet – looks red due to iron oxide on surface

  21. The Face on Mars

  22. The Face on Mars • Martian sculpture? • New images show eroded raised surface

  23. Earth • 3rd planet from sun • Water exists as a liquid, solid, and gas • Atmosphere keeps UV rays out • Only planet with life

  24. Venus • 2nd planet • Thick clouds trap heat • 878 F • Hotter than Mercury • Rains sulfuric acid

  25. Mercury • Closest to the sun • 2nd smallest • Lots of craters on surface

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