how to define weathering and erosion how the landscape is shaped by different processes of weathering how broken-down rocks are moved down slopes by gravity how human activity can influence mass movement.
ICE-BREAKER ACT VITY Discuss the following questions with your classmates:
1. Can you think of different ways the weather might break down rocks? 2. Can you think of different ways humans and animals might break down rocks?
3. From what you learned about rocks in Chapter 3, can you name an area in Ireland where weathering occurs?
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Weathering and erosion Learning Intentions
In this section, you will learn: zz the difference between weathering and erosion zz about mechanical weathering and chemical weathering.
Denudation Weathering Mechanical Chemical Erosion
Freeze-thaw action
The rocks and soil of the Earth’s crust are constantly being worn down by processes known as denudation. The two main processes of denudation are weathering and erosion.
Fluctuating Scree
Carbonation Carbonic acid Calcium carbonate
) Figure 6.1Weathered rock formations in Utah, USA
