Earth's Layer & Rock Cycle

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Across
  1. 2. Melted rock located beneath Earth’s surface.
  2. 4. The rigid outer layer of Earth made of the crust and the uppermost mantle; it is broken into tectonic plates.
  3. 6. A chemical element found in some minerals and inside Earth.
  4. 7. Cycle The continuous process that changes rocks between igneous, sedimentary, and metamorphic forms.
  5. 8. The thin, outermost layer of Earth where people live and where continents and oceans are located.
  6. 12. Rock that changes form because of heat and pressure inside Earth.
  7. 14. The thick layer of hot rock between the crust and the core.
  8. 17. The solid center of Earth made mostly of iron and nickel.
  9. 18. The amount of mass in a certain amount of space; how tightly matter is packed together.
  10. 21. A soft, slowly flowing layer of the mantle beneath the lithosphere that allows tectonic plates to move.
  11. 22. An invisible force around Earth created by the movement of metals in the outer core that protects the planet from harmful solar radiation and helps compasses point north.
  12. 24. A heavy metal element found in large amounts in Earth’s core.
  13. 25. A metal element found with iron in Earth’s core.
Down
  1. 1. A type of dark, dense rock or magma that forms mainly from iron- and magnesium-rich minerals and is common in ocean crust.
  2. 3. Large pieces of the lithosphere that slowly move on top of the asthenosphere.
  3. 5. The liquid layer of Earth made mostly of iron and nickel that surrounds the inner core.
  4. 9. Rock formed when sediments are pressed and cemented together over time.
  5. 10. A mineral that contains silicon and oxygen; most rocks in Earth’s crust are made of silicate minerals.
  6. 11. The process where minerals glue sediments together to form sedimentary rock.
  7. 12. The strong, lower part of the mantle located beneath the asthenosphere.
  8. 13. The force pushing on something; inside Earth, pressure increases deeper underground.
  9. 15. One section of Earth that is stacked above or below another section.
  10. 16. Rock formed when melted rock cools and hardens.
  11. 19. The process where layers of sediment are pressed tightly together by the weight of layers above them.
  12. 20. A very large body of salt water that covers most of Earth’s surface.
  13. 23. A lighter-colored rock or magma that is rich in silica and is common in continental crust.