Environmental Science - EROSION

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Across
  1. 3. Weathering - Is when Chemical reactions break down the bonds holding the rocks together, causing them to fall apart, forming smaller and smaller pieces.
  2. 5. The erosion caused by the wind
  3. 6. Movement Mass movement is the down slope movement of earth materials under the influence of gravity.
  4. 9. Soil consists of a mixture of weathered rock, finely ground into powder, minerals, and a variety of living and dead life forms.
  5. 10. Weathering - Is when rocks are broken down and are torn apart by physical force, rather than by chemical breakdown.
  6. 13. The upper part of the soil.
  7. 15. - Is the rock or soil that comes from erosion and ends up as little chunks carried by water.
  8. 16. - The scraping of a rock surface by friction between rocks and moving things
Down
  1. 1. The layer or bed of earth beneath the topsoil
  2. 2. Process where material is added to a landform.
  3. 4. The eating away of surface material from the Earth’s crust.
  4. 7. - brown or black, partially decomposed plant or animal material that forms the organic portion of soil.
  5. 8. A sheet of ice that moves slowly over time.
  6. 11. Soil is made up of distinct horizontal layers; these layers are called horizons.
  7. 12. -Is when oxygen combines with iron-bearing silicate minerals causing "rusting"
  8. 14. The solid rock that underlies loose material, such as soil, sand, clay, or gravel.