Unit 4

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Across
  1. 1. A type of rock that forms from the cooling of molten rock at or below the surface.
  2. 3. When rock and soil slide quickly down a steep slope.
  3. 6. A type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions.
  4. 7. a naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition.
  5. 8. The very slow downhill movement of rock and soil types on gentle slopes. Often results from the freezing and thawing of water in cracked layers of rock beneath the soil.
  6. 11. When one large mass of rock and soil suddenly slips down a slope. That slope is typically at the bottom of a clay-rich hill.
  7. 12. A series of processes on the surface and inside Earth that slowly changes rocks from one kind to another.
  8. 15. The grinding away of rock by other rock particles carried in water, ice, or wind.
  9. 16. The flat, wide area of land along a river.
  10. 21. Type of igneous rock formed from the cooling and solidification of magma beneath Earth's surface.
  11. 22. Type of igneous rock that forms from the cooling and solidification of lava at Earth's surface.
  12. 23. A mass‐wasting event in which turbulence occurs throughout the mass.
  13. 25. A large groove or channel in the soil that carries runoff after a rainstorm.
  14. 26. A tiny groove in soil made by flowing water.
  15. 28. The process that breaks down rock through chemical changes.
  16. 30. A river or stream flowing into a larger river or lake.
Down
  1. 2. A meander that has been cut off from the river.
  2. 4. Any process that breaks rock down into smaller pieces without changing the chemistry of the rock; typically wind and water.
  3. 5. Gluing together of sediment and rock.
  4. 9. The process by which natural forces move weathered rock and soil from one place to another.
  5. 10. This rapid downhill movement of water, rock, and soil often happens after very heavy rain in a normally dry area.
  6. 13. A wide, sloping deposit of sediment formed where a stream leaves a mountain range.
  7. 14. Any large mass of ice that moves slowly over land
  8. 17. Any one of several processes that move sediment and rock downhill.
  9. 18. A cascade of water falling from a height, formed when a river or stream flows over a precipice or steep incline.
  10. 19. The process by which outer rock layers are stripped away.
  11. 20. A landform made of sediment that is deposited where a river flows into an ocean or lake.
  12. 24. A type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together.
  13. 27. A large bend in the river, formed in the middle and lower courses, has both shallow and steep sections.
  14. 29. The breaking down of rocks and other materials on the Earth's surface.