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Name: ______________________________
Date: _____________________
Grade 7 science
Westmount High School
Weathering and Erosion
1. Define Weathering:
2. What are the differences between chemical weathering and mechanical weathering?
3. Describe what water does to pavement when it continually freezes and thaws.
4. Specify what type of weathering (mechanical, chemical or biological) the following are examples of:
____________________________ a. Sand particles grind against rock
____________________________ b. Acid rain hits a limestone statue
____________________________ c. Rust forms on an old wheel barrow outside
____________________________ d. Rocks become smooth and round in shape in a stream
____________________________ e. Roots of a tree grow into the rock below
____________________________ f Rocks in a stream begin dissolving due to carbonic acid present
____________________________ g. Changes in temperature cause rock to break apart
5. What are the three stages of Erosion?
1.__________________________
2. __________________________ 3. __________________________
6. Describe two events that contributed to the area around Montréal being mostly flat today?