Environmental Science Crossword Puzzle

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Across
  1. 3. This type of rock forms when a pre-existing rock is subjected to high temperature (which may cause it to melt partially), high pressures, chemically active fluids, or a combination of these agents.
  2. 5. It is made of rounded or semi-rounded rock fragments cemented.
  3. 6. These types of rock are formed from magma that cooled and hardened.
  4. 8. This is a metamorphosed sandstone and its sand grains are so tightly cemented together.
  5. 10. It is the most common rock type in Earth's crust.
  6. 12. This can be found in steel, a very important metal for building houses, bridges and other structures.
  7. 13. It is a series of horizontal layers in the soil that differ in chemical composition, physical properties, particle size, and the amount of organic matter.
  8. 15. This type of soil is characterized by its fine particles, smooth when dry, sticky when wet, retains water, drains poorly, less spaces to let air pass, rich in nutrients, cool and dense.
  9. 18. These are elements or compounds which are solid, inorganic, and naturally-occurring.
  10. 19. It is a thin covering over the land consisting of a mixture of minerals, organic material, living organisms, air and water that together support the growth of plant live.
Down
  1. 1. It is the most common mineral in the Earth's crust.
  2. 2. This type of rock forms from the sediments produced when existing rocks weathered and encoded into small pieces, then transported by water, wind, or gravity to downstream, downwind or downhill sites.
  3. 4. These are what make some rocks sparkle.
  4. 7. This is the removal and transportation of soil by water and wind.
  5. 9. It is a gray to black volcanic rock and generally erupted from strato volcanoes as thich lava flows.
  6. 11. This type of soil is characterized by its tiny particles, slippery when wet, not grainy or rocky, extremely fertile, retains water, easily transported by wind and water, good for agriculture purposes, and easily compact.
  7. 14. This type of soil is well-drained, fertile, mixture of sand, silty and clay, retains water, retains nutrients, strong granular structure, soft and crumby, easy to work with, and well aerated.
  8. 16. It looks like little green crystals and is typically found in some igneous and metamorphic rocks.
  9. 17. It consists of angular rock fragments cemented together.
  10. 18. It is a metamorphosed limestone.