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

Answer 1

Difference between Physical and Chemical Weathering:

1. Physical Weathering: This process involves the breaking down of rocks and minerals into smaller pieces without changing their chemical composition. It typically occurs due to physical forces such as temperature changes, freeze-thaw cycles, or pressure release.

2. Chemical Weathering: In contrast, chemical weathering involves the alteration of the chemical structure of rocks and minerals. This process can include reactions with water, acids, or oxygen, leading to the formation of new minerals and substances. It often results in changes in color, solubility, and overall mineral composition.

Examples or Types of Physical Weathering:

1. Freeze-Thaw Weathering: This occurs when water enters cracks in rocks, freezes and expands when temperatures drop, causing the rock to fracture.

2. Exfoliation: This type of weathering happens when outer layers of rock peel away due to temperature fluctuations and pressure release, often seen in granite formations.

These examples illustrate how physical weathering breaks down rocks without altering their chemical composition.