Rock and Soil

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Across
  1. 1. I am formed when magma from volcanoes cools and solidifies.
  2. 3. I am formed when existing rocks are exposed to heat and pressure deep within the Earth’s surface.
  3. 4. I am dark and made from very old, decayed plants.
  4. 9. I am stony and drain easily.
  5. 11. I am the perfect soil.
  6. 12. I do not stay the same forever. I do not stay in one place forever. I move about.
  7. 15. I am a layer of dark, fertile soil made of rotting plants.
Down
  1. 2. I am a chalk. I can be a limestone and even a sandstone.
  2. 5. The ancient Greeks and Romans used me in their buildings and artwork.
  3. 6. I am smooth and soapy to the touch.
  4. 7. I am commonly used in architecture because I am a very hard and durable rock.
  5. 8. I can be found in in desert regions. I can also form beaches where the land meets the sea.
  6. 10. I am a mixture of tiny rock particles, dead plants and animals, air and water.
  7. 13. When I am wet, I am easily moldable, then hardens when dried.
  8. 14. I am a soft, white, porous sedimentary rock which is made from a limestone.