Earth´s Systems

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Across
  1. 2. move side to side through only solids, moves slower than p waves
  2. 3. boundary where tectonic plates collide
  3. 7. the innermost layer of earth, divided into 2 parts, liquid outer and solid inner, made of iron and nickel
  4. 10. still in existence; surviving
  5. 12. the layer that lies between earth´s crust and core, the majority of earth´s mass is in this layer
  6. 14. water held underground in soil of deep reservoirs
  7. 16. group of animals that occupy an area
  8. 18. the movement caused within a fluid when the hotter, less dense material rises, and colder, denser material sinks
  9. 20. petroleum, natural gas,coal. made from remains of plants
  10. 21. the study of earth
  11. 23. compress of squeeze through solids and liquids, travels faster than s waves
  12. 24. a tool that measures/records details of earthquakes
  13. 25. the solid, outermost layer of earth, lying above the mantle
  14. 26. when heat, pressure, cooling, melting, and weathering cause rocks to change from one type to another over time
  15. 28. forms from pre-existing rock and fossils, appears layered
  16. 29. the supercontinent that existed before continents separated
  17. 30. large pieces of lithosphere that the ocean and continents rest on
  18. 31. occurs when divergent plates seperate, convection currents cause less dense material to rise, creates new ocean floor
Down
  1. 1. boundary where tectonic plates slide past eachother
  2. 4. boundary where tectonic plates divide
  3. 5. forms under extreme heat and pressure, appears twisted
  4. 6. the study of earthquakes and related phenomena
  5. 8. when a sudden release of energy in the lithosphere creates seismic waves
  6. 9. no longer in existence
  7. 11. forms when molten rock crystallizes and solidifies over time, appears glassy
  8. 13. when magma flows through a crack in the middle of a tectonic plate, and not a plate boundary, hawaiian islands were formed this way
  9. 15. the lower part of earth´s mantle, below the asthenosphere
  10. 17. form at convergent boundaries where one plate subducts under another, and magma underground is pushed upward
  11. 19. the outer part of earth, includes the crust and upper mantle
  12. 22. below the lithosphere, hotter and more fluid part of the mantle
  13. 27. solid inorganic material in nature