Question

Weathering is the breakdown of rocks into smaller particles called . weathering is when rocks are physically broken into smaller pieces, but the minerals in the rock remain the same. When a rock is broken down in a way that changes the mineral composition, it is called weathering.

Answer 1

Answer & Explanation:

1. Is sediment

2. Is Mechanical

3. Is chemical

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Answer 2

This question is incomplete

Step-by-step explanation:

This question is incomplete but each sentence made there has a general meaning. Each statement will analysed in the numbered explanation below

1) The first statement describes what weathering means. Weathering is a process involving the gradual break-down of rocks and it's component minerals into smaller pieces and unit which can be transported by means of erosion. There are three types of weathering chemical, physical and biological weathering.

2) The second statement describes physical weathering. This is a process in which rocks are broken down into smaller units with no effect on the mineral constituents of the rocks. Physical weathering can be caused by fast moving water and earth movement.

3) The third statement describes chemical weathering. This is a process in which the chemical composition of the rock is affected as the rock is broken down. This can be as a result of acid rain which reacts with the minerals in the rock to form other substance.

NOTE: Biological weathering is the type of weathering caused by biological activities. For example, the continuous movement of a large group of animals over a rock can make a rock break down over time.