8.28 Benchmark #1 Review

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Across
  1. 3. Jupiter, Saturn + Neptune are all made mainly of this molecule
  2. 7. This is a landform we studied on Mars, was most likely formed by flowing water
  3. 9. The solid, rocky surface of a planet
  4. 10. Mercury, Venus, Earth + Mars have this kind of surface
  5. 12. The mixture of gases surrounding a planet
  6. 13. A group of parts that interact to form a complex whole
  7. 14. These planets are far from the Sun and mostly made of gas molecules + ice
  8. 15. All the liquid and frozen water on Earth
Down
  1. 1. This type of rock is formed by flowing lava
  2. 2. These planets have solid, rocky surfaces
  3. 4. This contains all of the galaxies, solar systems, planets, stars and matter.
  4. 5. A physical feature of a planet, examples are channels, mountains and volcanoes
  5. 6. This type of rock is formed by flowing water
  6. 8. All living things on Earth
  7. 11. Scientists use this type of model to test ideas and study planets that are too far/dangerous to travel to
  8. 16. This is a machine that traveled to the surface of Mars in order to take pictures of the landforms and conduct tests on the land