Question

Q1. Answer the following questions:
a) Define weathering. How does it occur?
b) What is meant by chemical weathering?
c) Name 3 ways in which atmosphere assists in weathering.
d) Name any 3 factors involved in chemical weathering.

Answer 1

Answer:

1)Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. ... Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering.

2)Temperature,rainfall,and winds are important elements of atmosphere which assist in weathering.

3)The rate depends on temperature, surface area, and available water. The major reactions involved in chemical weathering are oxidation, hydrolysis, and carbonation. Oxidation is a reaction with oxygen to form an oxide, hydrolysis is reaction with water, and carbonation is a reaction with CO2 to form a carbonate.