Grade 9 Geography term 3

Water has power to split the rock because when it freezes, it:

• Contracts

• Evaporate

• Expands

• Remain the same

_____________ weathering is the chemical process that needs water and occur more rapidly

• Biological

• Chemical

• Freezing and thawing

• Physical

The breaking down of rocks by oxygen and water, often giving iron-rich rocks a rusty-coloured weathered surface.

• Oxidation

• Exfoliation

• Discoloration

• Hydrolysis

A process whereby winds, water or ice move the soil or rock particles.

• Deposition

• Erosion

• Weathering

• Deforestation

The removal of the upper layer of the rock

• Weathering

• Peeling

• Exfoliation

• Erosion

Discuss the term rapids.

Define the following terms: a. Monoculture

Define the following terms: b. Crop rotation

Name the three main minerals found in the soil.

Write a paragraph evaluating how the four poor agricultural practices can affect the quality of the soil and cause erosion.