6th Grade Science Review Part 1

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Across
  1. 2. The layer underneath the soil that consists of unweathered rock; also called regolith
  2. 3. A tiny particle of soil that allows water and air to mix in the soil
  3. 4. Small particles produced by weathering rock
  4. 7. One of the three main categories of rock formed deep below the earth's crust by heat and pressure
  5. 10. A volcano that occurs where a pool of intensely hot magma rises toward the surface, melting rock until it breaks through the crust
  6. 11. A large piece of the earths crust that floats on the melted rock in the earths mantle
  7. 12. An avalanche of red-hot dust and gases that races down the sides of some volcanoes
  8. 14. One of the three main categories of rock formed when layers of sediment and organisms harden
  9. 15. The multiple layers of soil
  10. 16. the vibrations that flow out from the focus of an earthquake
  11. 18. The process of decomposing rocks into new substances
  12. 19. the amount of energy released from an earthquake
  13. 20. The idea that Earth's crust is made up of moving plates
  14. 23. a break in the earth's surface along which rock can move
  15. 24. A weak acid formed from water and carbon dioxide
  16. 26. Giant ocean wave caused by an earthquake, volcano, or landslide occurring under or near the ocean
  17. 27. The molten rock and gases beneath the earth's surface
  18. 29. The crust and upper area of the earths mantle
  19. 33. A cave formation that builds on the floor of a cave; made from the dripping of dissolved calcite
  20. 37. A vehicle, such as gravity, water, wind, or ice that causes erosion
  21. 39. Ash released by a volcano
  22. 40. A spring that periodically blows steam and hot water into the air
  23. 41. The funnel-shaped mound of a volcano
  24. 42. The bowl shape at the top of a main vent through which lava flows
  25. 44. The smallest particle of soil; holds nutrients and water but does not have room for air
  26. 45. Soil that has properties of all three soil particles-- sand, silt, and clay
  27. 46. The amount of each kind of particle in a soil sample
Down
  1. 1. One of the three main categories of rock formed as magma and lava harden
  2. 3. The layer of soil that contains nutrients from the humus that have washed down through the upper layers and weathered minerals from the parent rock below
  3. 5. the beginning point of an earthquake; the location from which energy waves are sent
  4. 6. The process of breaking down rocks into smaller and smaller pieces
  5. 8. The dropping of sediment and rocks in a new location by gravity, wind, water, or ice
  6. 9. Water that rises to the earth's surface as it is heated by a magma pool
  7. 13. The largest particle of soil. It doesn’t retain water in the soil
  8. 15. a machine used to detect, time, and measure the movements of the earth
  9. 17. The area at the mouth of a river where sediment is deposited
  10. 20. A mixture of cinder, ash, and rock
  11. 21. An event that occurs when rocks along the plate boundaries shift suddenly and release their stored energy
  12. 22. The set of steps that should be used in all science experiments or investigations
  13. 25. The sediment that a stream carries
  14. 28. Erosion that occurs where gravity is the primary factor
  15. 30. A cave formation that hangs from the ceiling of a cave; made from the dripping of dissolved calcite
  16. 31. An educated guess
  17. 32. The changing and transforming of the rock as it undergoes weathering, heat, and pressure
  18. 34. The layer of soil in which most plants germinate and where roots grow
  19. 35. The process of breaking down rocks
  20. 36. A crack in the earth's crust through which molten rock comes to the surface
  21. 38. the point on the surface of the earth directly above the focus of an earthquake
  22. 43. The opening in the surface of the earth through which lava flows