Earth's Place in the Universe

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Across
  1. 3. A supercontinent that existed 300 Mya
  2. 7. Periods of very cold climate & glacial ice sheet advances
  3. 10. Alfred Wegener's 1912 theory that proposed the continents were once together and had drifted apart
  4. 12. The only type of rock that can contain fossils
  5. 15. A small celestial body of rock, ice & dust with a highly elliptical orbit
  6. 16. Preplanet pieces
  7. 17. The natural satellite orbiting Earth
Down
  1. 1. Scientists who study climates of the past using proxy data from rocks, sediments, tree rings coral & ice cores
  2. 2. The remains of organisms that lived only a short time, with wide distribution
  3. 4. In describing a planet, Jupiter- like
  4. 5. system The sun together with the eight planets & other celestial bodies
  5. 6. Water beneath the Earth's surface in pore spaces of rock & sediment
  6. 8. A small celestial body that orbits the Sun between Mars & Jupiter
  7. 9. In describing planet, Earth- like
  8. 11. The buildup of sediment at the mouth of a river
  9. 13. The process by which soil or rock are worn away & carried to another place
  10. 14. Water that flows over the land surface instead of infiltrating the soil