Earth's systems

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