How does rain break down rocks?

Answer 1

Rain is not an agent of erosion but water is. Water is the major physical agent that breaks rock. H20 weakens the stenght of the rock. it depends on pemeability. Water can detroy rock also by frost wedging. When the water freezes in a rock particles and get iced up. it expands the rock and as it goes back to water reduce and a continuous process will keep digging into the rock and weather it.

Answer 2

Slightly acidic rainwater can react with rock surfaces, dissolving them over time. Rocks can also be affected by organic sources of chemical reactants. Heat from the sun can cause differences in temperature between the surface and the interior of a rock which can cause a loosening of the surface called exfoliation. Liquid water penetrates cracks in the rocks surface where it can freeze and expand, opening up the cracks for further attack in tandem with acidic rainwater. Plant root growth can also cause cracks to further expand, making them more vulnerable to frost expansion and chemical attack. Underlying rock which is exposed due to erosion of the overlying rock becomes free of the pressure it was previously exposed to, causing the rock to expand and break apart. Other means of weathering include the expansion of crystallizing salts that have been taken in by a rock surface, expansion due to the absorption of water, and hydraulic action from crashing waves on seashore rock formations.

Answer 3

Biological weathering is a form of weathering caused by growth of roots and burrowing of animals. Plants roots are the most efficient agents of the biological weathering as they give off acids that contributes to break down of rocks. Biological weathering increases with soil thickness until the optima for biotic activity is reached.

Answer 4

The sun burns it with the hotness,

the rain beats away the particles,

the snow freezes it so that it cracks,

and lightening can electrify it.

Answer 5

Weather elements are a prime cause of mechanical weathering of rock. Wind, rain and ice all act to break down rock into smaller pieces.

Answer 6

Smaller rocks, gravel, sand, earth, dust...

Answer 7

the sun break the rocks by it temperature