Rock Cycle

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Across
  1. 4. The process that occurs under the earth's surface and turns any kind of rock into metamorphic rock.
  2. 7. The process that hardens magma and turns it into igneous rock. The ______ of magma can occur either underneath or on the earth's surface.
  3. 8. A type of sedimentary rock often found near oceans and lakes.
  4. 10. The process that turns any rock into magma. ________ a rock requires high temperatures, which only occur far beneath the earth's surface.
  5. 13. An opening in the earth's surface that allows hot magma, ash and gases to escape from deep below the surface. When magma reaches the surface through a _________, it is called lava. When lava cools, it forms extrusive igneous rock.
  6. 15. One of the three main rock types, formed deep within the earth, where rock material is subjected to intense heat and pressure. The rocks that result from these processes often have ribbon like layers and may have shiny crystals on their surface, formed by minerals growing slowly over time.
  7. 16. Loose pieces of minerals and rocks
  8. 18. A type of extrusive igneous rock, crated from lava that cools so quickly that no crystals can form on its surface. It can be found near volcanic lava flows.
Down
  1. 1. The process by which rocks are worn down by wind and water, creating sediment.
  2. 2. One of the three main rock types, formed from particles of sand, shells, pebbles, and other fragments of material. Together, all these particles are called sediment. Gradually, the sediment accumulates in layers and over a long period of time hardens into rock. Generally, __________ is fairly soft and may break apart of crumble easily. you can often see sand, pebbles, or stones in the rock, and it is usually the only type that contains fossils.
  3. 3. Imprints of leaves, shells, insects, or other items left in rock.
  4. 5. The recurring series of events that rocks undergo, over time, that transforms them from one type to another.
  5. 6. A deep valley that forms at the edge of a continent when an oceanic plate sinks underneath a continental plate.
  6. 9. The process by which soil, sediment, and small pieces of rock are carried away from their original locations and transferred elsewhere by the actions of wind, water, ice, or living organisms.
  7. 11. One of the three main rock types, formed from the cooling and hardening of magma. Sometimes the magma cools deep within the earth and other times it erupts onto the earth's surface from volcanoes.
  8. 12. A type of metamorphic rock that usually has ribbon like layers. ______ can often be seen on mountainsides, where rocks formed below the surface have been pushed up by movements in the earth's crust.
  9. 14. A type of metamorphic rock formed when limestone is pushed down into the earth and subjected to intense heat and pressure for a long period of time.
  10. 15. From the Greek "to transform," __________ is the change that occurs when rocks under the earth's surface are subjected to intense heat and pressure, turning them into metamorphic rocks.
  11. 17. Hot, molten rock found deep inside the earth.