Sydni's crossword

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Across
  1. 3. 71% of earth
  2. 4. outer layer of the earth
  3. 6. The fourth planet from the sun, known for it’s red appearance
  4. 9. 2 layer of earth
  5. 10. (4,200 km) long and, in places, is 4.5 miles (7km) deep.
  6. 12. ice Ice found at the poles and beneath some of the surface of Mars.
  7. 13. When the orbit of another planet lines it up in the opposite direction of the sun as seen from Earth.
  8. 15. second to last of earths layers
Down
  1. 1. The larger of Mars’ two moons, orbits closest to the planet.
  2. 2. largest moutain on earth
  3. 5. Marineris An extensive canyon system on the Mars equator. It is 2,500
  4. 7. the deepest layer of earth
  5. 8. The smaller of Mars’ two moons, orbits furthest from the planet.
  6. 11. the 4 planet from the sun
  7. 12. blowing air in earths atmosphere
  8. 14. Mons A very large shield volcano mountain on the planet Mars.