Rocks by Erin

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Across
  1. 3. molten rock that floats out and onto the Earths surface
  2. 6. all sedimentary particles larger than two millimetres is called grave. Gravel is subdivided in to pebbles,cobbles, and boulders
  3. 7. a body of a rock with special that allow geologist to map,describe and name it
  4. 8. a scientist who studies geology
  5. 10. molten rock that is located beneath the earths surface.
  6. 11. igneous rock that forms magma cools below the Earths surface
  7. 13. sudden release of energy built up in an area of on a crust or upper
  8. 14. loose particles of rock or mineral that are the size of gravel
Down
  1. 1. substances which cannot be broken down into other substances
  2. 2. igneous rock that forms when magma cools on the earths surface
  3. 4. layers, or bands, in rocks
  4. 5. sedimentary rock made of rounded pebbles held in together with matrix
  5. 9. a scale used to measure the hardness of minerals
  6. 12. loose particles of rock or minerals that range in size from0.0625-2.0 millimetres in diameter
  7. 14. the solid outermost part of the Earth. The crust is all the land you see and the land on the ocean bottom
  8. 15. a layer of sediment or sedimentary rocks