Investigation 1 Soil Vocabulary Words

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Across
  1. 3. A solid earth material made of 2 or more minerals.
  2. 4. When plants and animals break down into small pieces.
  3. 8. Any non living natural resource that makes up Earth, including soil (rocks), air, and water.
  4. 9. A mixture of different sized rocks along with water and air. What Scientists call the diggable layer that covers Earth.
  5. 10. Pieces of very tiny particles of rock.
  6. 12. Pieces of rock that are larger than gravel.
Down
  1. 1. Small particles of rock which are larger than sand and smaller than pebbles.
  2. 2. Pieces of rock that are smaller than sand and larger than clay.
  3. 3. Means to hold or continue to hold.
  4. 5. Something that living things need to grow and stay healthy
  5. 6. Tiny pieces of dead plants and animals.
  6. 7. Animals that live in the soil. They mix the soil and make passageways for air and water. Their waste adds nutrients to the soil.
  7. 11. The smallest particles of rock which are invisible to the eye, but you can feel it.