Weathering

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Across
  1. 2. process in which rocks weather by peeling off in sheets rather than eroding grain by grain
  2. 5. _____________weathering is caused by the effects of changing temperature on rocks, causing the rock to break apart. The process is sometimes assisted by water.
  3. 7. limestone is weathered by rainwater containing dissolved CO2,
  4. 8. the process by which soil and rock particles are worn away and moved elsewhere by wind, water or ice.
Down
  1. 1. Break up of rock due to exposure to the atmosphere
  2. 3. the breakdown of rock by oxygen and water, often giving iron-rich rocks a rusty-coloured weathered surface.
  3. 4. the breakdown of rock by acidic water to produce clay and soluble salts.
  4. 6. a large, perennial accumulation of crystalline ice, snow, rock, sediment, and often liquid water that originates on land and moves down slope under the influence of its own weight and gravity.