Chapter 3 Book J

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Across
  1. 2. second largest and sixth planet from the Sun; has a complex ring system, at least 31 moons, and a thick atmosphere made mostly of hydrogen and helium
  2. 4. third planet from the Sun; has an atmosphere that protects life and surface temperatures that allow water to exist as a solid, liquid, and gas
  3. 7. second planet from the Sun; similar to Earth in mass and size; has a thick atmosphere and a surface with craters, faultlike cracks, and volcanoes
  4. 9. largest and fifth planet from the Sun; contains more mass then all the other planets combined, has continuous storms of high-pressure gas, and an atmosphere mostly of hydrogen and helium
  5. 11. meteoroid that strikes the surface of a moon or planet
  6. 12. smallest planet, closest to the Sun; does not have a true atmosphere; has a surface with many craters and high cliffs
  7. 13. fourth planet from the Sun; has polar ice caps, a thin atmosphere, and a reddish appearance caused by iron oxide in weathered rocks and soil
  8. 14. space object made of dust and rock particles mixed with frozen water, methane, and ammonia that forms a bright coma as it approaches the Sun
Down
  1. 1. system of eight planets, including Earth, and other objects that revolve around the Sun
  2. 3. a piece of rock or metal made up of material similar to that which formed the planets; mostly found in the asteroid belt between the orbits of Mars and Jupiter
  3. 5. usually the eighth planet from the Sun; is large and gaseous, has rings that cary in thickness, and is bluish-green in color
  4. 6. a meteoroid that burns up in Earth’s atmosphere
  5. 8. giant, high-pressure storm in Jupiter’s atmosphere
  6. 10. seventh planet from the Sun; is large and gaseous, has a distinct bluish-green color, and rotates on an axis nearly parallel to the plane of its orbit