Earth's Systems

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Across
  1. 2. Petroleum, natural gas, coal. Made from remains of plants & animals.
  2. 6. Forms from pre-existing rock and fossils. Appears layered.
  3. 8. Boundary: Boundary where tectonic plates slide past each other.
  4. 10. The study of earthquakes and related phenomena.
  5. 11. No longer in existence
  6. 14. Group of animals that occupy a certain area
  7. 15. Below the lithosphere. Hotter and more fluid part of mantle.
  8. 16. Floor Spreading: Occurs when divergent plates separate. Convection currents cause less dense material to rise. Creates a new ocean floor.
  9. 17. Boundary: Boundary where tectonic plates divide.
  10. 18. Form at convergent boundaries where one plate subducts under another, and magma underground is pushed upward
  11. 22. water held underground in the soil in deep reservoirs.
  12. 24. Compress or squeeze through solids & liquids. Travel faster than S.
  13. 26. the movement caused within a fluid when the hotter, less dense material rises, and colder, denser material to sinks.
  14. 27. The supercontinent that existed before continents separated.
  15. 28. The solid, outermost layer of the Earth, lying above the mantle.
  16. 29. Still in existence, surviving species.
  17. 30. When heat, pressure, cooling, melting, and weathering cause rocks to change from one type to another over time.
Down
  1. 1. A solid inorganic material found in nature
  2. 3. Forms when molten rock crystallizes and solidifies. Appears glassy.
  3. 4. Plates: Large pieces of lithosphere that the ocean & continents rest on
  4. 5. The layer that lies between Earth's crust and core. The majority of earth’s mass is in this layer.
  5. 7. Boundary: Boundary where tectonic plates collide.
  6. 9. When magma flows through a crack in the middle of a tectonic plate, & not at a plate boundary. Hawaiian islands were formed this way.
  7. 12. When a sudden release of energy in the lithosphere creates seismic waves.
  8. 13. The study of Earth
  9. 16. A tool that measures/ records details of earthquakes.
  10. 19. the outer part of the earth. Includes the crust & upper mantle.
  11. 20. The innermost layer of earth. Divided into 2 parts, liquid outer and solid inner. Made of iron and nickel
  12. 21. the lower part of earth's mantle, below the asthenosphere.
  13. 23. Forms under extreme heat and pressure. Appears twisted.
  14. 25. Move side to side through ONLY solids. Travel slower than P waves.