Unit 6 vocabulary part 1

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Across
  1. 3. The top layer of soil. It's where most plant roots grow and is full of nutrients.
  2. 4. Dark, rich part of the soil made from decomposed plants and animals. It adds nutrients to the soil.
  3. 5. Large soil particles that feel gritty. Sand doesn't hold much water.
  4. 7. How soil feels based on the size of its particles. Some soil feels rough, others smooth.
  5. 9. parts of soil that were never alive, like sand, clay, or minerals.
  6. 10. Very tiny particles that feel sticky. Clay holds a lot of water but drains slowly.
  7. 12. Things in the soil that once were alive, like dead leaves or roots. They help plants grow.
  8. 13. Medium-sized particles that feel soft, like flour. Silt holds some water.
Down
  1. 1. The outer layer of the Earth that includes racks and soil. It's where we live and grow food.
  2. 2. The process of breaking down dead plants and animals into nutrients. Worms and bacteria help with this.
  3. 6. How much of the food (nutrients) plants need is in the soil. Healthy soil has a lot.
  4. 7. The layer under topsoil. It has fewer nutrients and more clay.
  5. 8. The best mix of sand, silt, and humus. It's great for growing plants.
  6. 11. How good the soil is at helping plants grow. Fertile soil has nutrients and water.