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The Outer Planets

The Outer Planets. Astronomy 1. Weekly Quiz. In place of a quiz this week, you must be able to identify each inner planet and give several facts for each. So pay attention!!!!. The Outer Planets. The outer planets are huge in comparison to the inner planets

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The Outer Planets

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  1. The Outer Planets Astronomy 1

  2. Weekly Quiz In place of a quiz this week, you must be able to identify each inner planet and give several facts for each. So pay attention!!!!

  3. The Outer Planets • The outer planets are huge in comparison to the inner planets • Of the outer planets Jupiter is the largest (the largest of all planets for that matter!) • If Earth was the size of an average student – Jupiter would be a six-story building • The outer planets include Jupiter, Saturn, Uranus and Neptune • All are comprised of gases

  4. The Outer Planets • Because the planets are so large they have an enormous amount of gravitational pull – this does not allow the gases to escape into space • Scientist believe that the gas planets have a dense solid core, but there is no way to be sure because they are buried deep in the planet

  5. The Outer Planets • They are much colder than the inner planets because they are so far away from the sun • They resemble a mini solar system because of the immense gravitational pull • They are all surrounded by rings (but Saturn is known for its rings)

  6. Jupiter • 5th planet from the sun • Largest planet in the solar system • The gases that surround Jupiter are mostly hydrogen and helium • Jupiter has a famous Giant Red Spot – it appears to be a storm similar to a hurricane; however, the Earth could fit inside the storm about 3 times!

  7. Jupiter • Jupiter has many moons; the largest four are named • Io • Europa • Ganymede • Callisto • Io has many volcanoes causing the surface to constantly change • Europa appears to have an icy crust with flowing water below the surface – what could that mean? • Ganymede is the largest moon and also has an icy crust • Callisto is also icy

  8. Jupiter • One day is less than 10 hours – this rapid rotation causes the “bands” • Takes about 12 years to revolve around the sun

  9. Saturn • 6th planet from the sun • 2nd largest planet in the solar system • Known for its beautiful rings • The rings are made of ice chunks and rocks • There only appears to be one large ring, but there are actually hundreds

  10. Saturn • There are many moons around Saturn, 5 are named • Titan • Tethys • Iapetus • Dione • Rhea

  11. Saturn • One day is approximately 11 hours • Takes about 30 years to revolve around the sun • Very low density • Atmosphere is mostly hydrogen and helium

  12. Uranus • 7th planet from the sun • Has a bluish look because of the methane in the atmosphere • Uranus rotates on a horizontal axis as oppose to a vertical axis like every other planet in the solar system • Uranus also has moons one with flowing lava on the surface, but most are icy and cratered

  13. Uranus • 3rd largest planet in the solar system • One day is approximately 18 hours • Takes about 84 years to revolve around the sun

  14. Uranus • Has a solid core surround by a mantel of liquid water with dissolved ammonia (similar to window cleaner) • Also has rings, but not as visible as Saturn

  15. Neptune • 8th planet from the sun • Contains visible clouds similar to cirrus clouds on Earth • Neptune was not discovered, but predicted by astronomers – it could not been seen at the time, but its orbit was predicted and in 1846 was first seen • It contains a giant dark spot similar to the storm on Jupiter • Neptune also has many moons – the largest is named Triton

  16. Neptune • One day is approximately 14 hours • Takes approximately 165 years to revolve around the sun • Very similar in size and composition as Uranus

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