what factors are responsible for physical weathering ?

Question

aslo..what factors are responsible for chemical weathering ?

Answer 1

Physical weathering means something that physically happens to cause erosion. What types of things could make that happen? Think about it: Wind, water, heat/cold (due to expansion during heat and contraction during cold). Can you think of anything else in the environment which could cause physical change?

What could cause chemical weathering? Obviously, something chemical. What chemicals might be in the environment to cause weathering ? One that immediately comes to mind is acid rain, which dissolves minerals in rock. Can you think of any other things?

Answer 2

Factors Of Physical Weathering

Answer 3

Physical weathering is also known as mechanical weathering and the main factors responsible are frost action (including frost heaving and frost wedging) and also pressure release. Chemical weathering involves substances such as acid rain that change the chemical composition of the rock. Erosion is totally different and is caused by moving bodies, wind water and glaciers for example.

Answer 4

Physical weathering is due to mostly hydrological factors--water, also wind plays a factor too. Chemical is the breakdown of a mineral due to a chemical reaction inside the mineral-a example would be sodium bicarbonate calcifying limestone causing it to erode.

Answer 5

Intense rain such as monsoon season, is going to increase the risk of flooding. This is because, with intense rain, there is less infiltration happening as the soil becomes water logged very quickly, so the water will find it self to the sea/river by the means of surface run off. Surface run off is the quickest way that water can travel to reach the sea as opposed to ground/base flow which is much slower. Therefore, the risk of flooding increases. Another physical factor could be the soil type of the land. For infiltration to happen, the ground must be permeable - i.e. it must allow water to go through it. E.g. Sandy land.If this is the case, then base flow will take place, which is a slow process, decreasing the risk of flooding. However, if the land is impermeable, then infiltration cannot happen, so therefore surface run off will be increased. This increases the risk of flooding as surface run off is the quickest way the water can reach the sea/river. Hoped that helped:)

Answer 6

The agents of physical erosion: water, wind, ice.