Weathering and Erosion Unit Test

Question

Weathering and Erosion Unit Test

1 of 151 of 15 Items
Question
Which describes the physical weathering of rock by water?(1 point)
Responses

Any break down of a rock is the same as physical weathering of rock by water.
Any break down of a rock is the same as physical weathering of rock by water.

Water breaks down a rock into smaller pieces with the same composition as the larger rock.
Water breaks down a rock into smaller pieces with the same composition as the larger rock.

Water dissolves rock into a solution.
Water dissolves rock into a solution.

Water carries away pieces of rock.

Answer 1

Water breaks down a rock into smaller pieces with the same composition as the larger rock.

Answer 2

Weathering and Erosion Unit Test

2 of 152 of 15 Items
Question
What term describes physical weathering due to collisions between sand and sediment carried in moving water and the rock surface over which the water flows?(1 point)
Responses

dissolving
dissolving

erosion
erosion

wedging
wedging

abrasion

Answer 3

Weathering and Erosion Unit Test

3 of 153 of 15 Items
Question
Water plays an important role in the chemical weathering of rock. In 3–5 sentences, identify and explain two agents of chemical weathering to support that statement.(4 points)

Answer 4

Two agents of chemical weathering that involve water are hydration and oxidation. Hydration occurs when water molecules are added to the mineral structure of rocks, causing them to expand and weaken. This process can lead to the breaking down of the rock over time. Oxidation involves the reaction of minerals in the rock with oxygen in the presence of water, causing the minerals to change chemically. This reaction can lead to the breakdown and disintegration of the rock material. Overall, water facilitates these chemical processes by providing the medium for mineral reactions to occur, ultimately contributing to the chemical weathering of rocks.