Question

1. mechanical weathering includes

a. burrowing animals breaking rock as they dig.
b. humans digging up rock for construction
c. plant roots growing into a crack and widening it.
d. all of these

1. mechanical weathering is a ______

a) physical process
b. chemical process
c. biological process
d. mathematical process

1. what occurs when the rocks bump against other rocks?

answer:

1. what can cause weathering?

a. water

Explanation:

Question 3

Mechanical weathering involves physical breakdown of rocks. Burrowing animals (a), humans digging (b), and plant roots (c) all physically break rocks. So all options are correct.

Mechanical weathering is about physical breakdown (like freezing - thawing, abrasion) without chemical change. So it's a physical process.

When rocks bump against other rocks, abrasion occurs. Abrasion is a type of mechanical weathering where rocks grind against each other, wearing down and breaking into smaller pieces.

Answer:

d. All of these

Question 4