WEATHERING & EROSION

OXYGEN

• Agent of chemical weathering
• Rust is caused by oxidation

WATER

• Most important agent of chemical weathering
• Water weathers rock by dissolving it

ABRASION

• The grinding away of rock by rock particles carried by water, ice, wind, or gravity
• Wind, water, or ice can wear away exposed rock surfaces.

FREEZING & THAWING

• Water freezes in cracks and makes them expand
• Ice wedging, which is part of freezing and thawing, causes potholes

EROSION

• Erosion is the process by which water, ice, wind, or gravity moves fragments of rock and soil.
• One type of erosion is landslides.

THINGS THAT CAUSE EROSION:

• Gravity
• Running water
• Glaciers
• Waves
• Wind