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09 uni 03

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Transcript

  • 1. The Solar System
  • 2. Think. Pair. Share. i) What are the names of the 8 planets in the Sol Solar System? (Hint: E J M M N S U V) ii) Order the planets according to their distance from the Sun. iii) How can you remember this order?
  • 3. The Planets
    • A Planet:
    • Orbits a star, but is not a star itself.
    • Is spherical.
    • Is the biggest object in its orbital path.
  • 4. The Planets
    • Inner planets
    • Mercury, Venus, Earth, and Mars.
    • Also called the terrestrial planets .
    • Relatively small, have solid cores and rocky crusts.
  • 5. The Planets
    • Outer planets
    • Jupiter, Saturn, Uranus, and Neptune.
    • Also called the gas giants .
    • Large clumps of gas, ice and dust, cold temperatures.
  • 6. Asteroid Belts Asteroids are chunks of rock and metal floating in space. There are 2 asteroid belts in our solar system: 1) Between Mars and Jupiter. 2) The Kuiper Belt on the edge of the solar system.
  • 7.  
  • 8. Pluto
    • Pluto is not a planet.
    • In 2006 Pluto was declared to be
    • a dwarf planet because:
    • a) It sometimes crosses Neptune’s orbit.
    • b) Does not have a clear orbit (other objects in its path).
    • c) Other objects in the Kuiper belt were discovered to be larger than Pluto.
  • 9. Dwarf Planets Dwarf planets orbit the Sun and are spherical, but are not the largest objects in their orbits. - Pluto - Makemake - Haumea - Eris - Ceres