EARTH SCI

Any reaction, either physical or chemical, that occurs at the interface between a rock’s surface and the atmosphere such that the rock disintegrates or decomposes.

• Weathering

• Physical Weathering

• Chemical Weathering

• Biological Weathering

Disintegrates rocks, breaking them into smaller pieces by physical means.

• Weathering

• Physical Weathering

• Chemical Weathering

• Biological Weathering

Decomposes rocks through chemical reactions that change the original rock forming minerals.

• Weathering

• Physical Weathering

• Chemical Weathering

• Biological Weathering

Disintegrates rocks through the action of biological organisms such as plants and lichens.

• Weathering

• Physical Weathering

• Chemical Weathering

• Biological Weathering

What is NOT a part of the 4 types of physical weathering

• 1. Development of joints

• 1. Crystal Growth

• 1. Thermal expansion

• 1. Frost wedging

• Hydrolysis

What is NOT a part of the 4 types of Chemical weathering

• 1. Development of joints

• 1. Acidification

• 1. Oxidation

• 1. Carbonation

• Hydrolysis

1. Select the Two examples of Biological Weathering 

• 1. Root Wedging

• 1. Crystal Growth

• 1. Action of Lichens

• 1. Frost wedging

The susceptibility of minerals roughly follows the order of crystallization of minerals in the Bowen’s reaction series.

• • Rock Type

• Topography

• Time

• Erosion

• Physical weathering occurs more quickly on a steep slope than on a gentle one. 

• • Rock Type

• Topography

• Time

• Erosion

• Length of exposure to agents of weather determines the degree of weathering of a rock.

• • Rock Type

• Topography

• Time

• Erosion