Weathering of rocks

Weathering is defined as.....

• the displacement of soil through wind or water

• the removal of nutrients from a soil

• the breaking down of rocks into smaller pieces

• the changes in weather patterns affecting agricultural practices

Give THREE reasons why rock weathering is important.

What type of weathering mechanism is taking place in the picture

• Physical

• Chemical

• Reduction

• Biological

What type of reaction is the following:

CO₂ + H₂O ----> H₂CO₃

• Oxidation

• Reduction

• Hydrolysis

• Carbonation

What type of weathering mechanism is taking place in the picture?

• Biological

• Erosion

• Physical

• Wind

Name this reaction:

2Fe₂O_{3 +} 3H₂O ----> 2Fe₂O₃.3H₂O

• Oxidation

• Hydration

• Dissolution

• Carbonation