There are TWO parts to this question:Describe the between physical and chemical weathering (2 points) and a list at least two examples or types of physical weathering (2 points). (4 points)

Answer 1

Part 1: Differences Between Physical and Chemical Weathering

1. Definition: Physical weathering refers to the mechanical breakdown of rocks and minerals without any change in their chemical composition. In contrast, chemical weathering involves the alteration of the chemical structure of rocks and minerals through reactions with environmental agents, leading to changes in composition and mineral identity.

2. Processes: Physical weathering processes include factors like temperature fluctuations, frost action, and abrasion. Chemical weathering processes involve reactions such as hydrolysis, oxidation, and carbonation, which alter the minerals' chemical makeup.

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Part 2: Examples of Physical Weathering

1. Frost Action (Freeze-Thaw Cycle): Water enters cracks in rocks, freezes, and expands when the temperature drops, causing the rocks to fracture and break apart.

2. Abrasion: The scraping and wearing away of rocks caused by wind, water, or ice carrying sediments, which grind against the surfaces of rocks, leading to their gradual wearing down.