This refers to the decomposition of rocks and minerals as chemical reactions alter them into new substances.

This refers to the disintegration of rocks by physically breaking them apart.

Factors affecting Physical Weathering: Sand and rock carried by wind, water, ice wears away surface rock when rocks collide. Most common in windy areas.

Factors affecting Physical Weathering: Roots grow into cracks and push rocks apart.

Factors affecting Chemical Weathering: Rocks that has iron in it mixes with oxygen and rusts.

Factors affecting Chemical Weathering: Air pollution reacts with clouds and falls on rock as precipitation.

Erosion triggering factors: It is a vibration that triggers mass wasting.

Erosion triggering factors: This can trigger a rapid movement or slow movement on mass wasting.

Thawing above permafrost on slopes promotes slow downhill movement.

Mass of regolith detaches from its substrate along a spoon-shaped sliding/ failure surface; slips coherently downhill.

The slow movement downhill of rock fragments and ice. Develop where debris volume falling into a valley exceeds ice accumulation.

Denotes any down-slope movement of soil and rock under the direct influence of gravity.

A downslope viscous flow of fine-grained materials that have been saturated with water and moves under the pull of gravity.

Turbulent clouds of debris mixed with air that rush down steep slopes.

The rock free-falls due to undercutting [e.g., cliff (natural) or road cutting (man-made)].