Which of these types of weathering requires the presence of water?

Answer 1

The weathering of rock by water is in two forms. One is the physical impact of moving water from rain, outflow, or tides. The other is solution, in which water dissolves minerals in the rock surfaces.

Rain and surface water can dissolve gases from the air to form dilute acids that can then chemically react with minerals. This type of erosion can also be seen on stone statues and monuments. The extreme form, which includes dissolved sulfur and nitrogen compounds, is referred to as "acid rain".

Answer 2

The weathering caused by rain water, ice, and the wave action of the sea at the base of cliffs, all require water. The rain water seeps into cracks in the rocks. When the water freezes, the ice expands and forces the cracks wider, even splitting off large portions of the original rock. Then there is the constant wave action of the sea at high tide (especially on spring tides and during a storm) against the base of cliffs, picking up large boulders to hammer at the cliff face, then grinding the fallen rocks until they become rounded pebbles, and then shingle on a beach - even becoming grains of sand.

Answer 3

Wind, gravity,chemical (oxidation), radiation (esp. ultraviolet).

Answer 4

solution

Answer 5

Solution :)

Answer 6

carbonation

Answer 7

Oxidation