These are external processes that occur at or near the surface of the Earth.

Which of the following is considered as a degradation process? Choose all that applies.

What are the two types/processes of weathering?

The physical breakdown and/or chemical alteration of rocks.

The breaking up of large rocks into smaller fragments without changing the rock's mineral composition.

This occurs in regions where temperature fluctuates above and below freezing point, resulting in a freeze-thaw cycle. Water that enters through the cracks and empty spaces of rocks expands when it freezes due to the outward force by ice.

It results from the expansion and contraction of rocks caused by the the temperature changes.

This process decomposes rocks through chemical change.

The process where reddish-brown rust will appear on the surface of iron-rich minerals which easily crumbles and weakens the rock.

Reaction involves water that results in dissolution of the original material.

This type of weathering is important in the formation of caves.

A type of wasting wherein there is the rock falls in a fairly coherent manner and moves along a well-defined surface.

Occurs when a piece of rock or mass of rocks become dislodged and makes free-fall, except that it involves a mixture of soil, vegetation, and rocks

 Particles move by rolling, sliding, and shuffling along eroded surfaces and the movements occur in all erosional agents.

Particles move from the surface to the medium in quick repeated cycles. 

Glaciers are capable of erosion. They can erode rocks through Plucking and Abrasion.

raindrops cause tiny particles of soil to be detached and to move out.

Waves from the ocean and seas crash against the shore, pounding the rocks into pebbles and reducing the pebbles to sand.

Which of the following is not a preventive measure to control soil erosion?

Who is the author of the Tragedy of the Commons?