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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?