WED-Weathering, Erosion, and Deposition

Front

Flood water against canyon wall wearing it down

Back

weathering

Answer explanation

Flood water wearing down a canyon wall is an example of weathering, as it involves the breakdown of rock material due to the force of water. Erosion, on the other hand, refers to the movement of sediment, not just the wearing down.

Front

Acid rain dissolving underground limestone.

Back

weathering

Answer explanation

Acid rain reacts with limestone, causing it to break down. This process is known as weathering, which involves the chemical alteration of rocks. Erosion refers to the movement of materials, while deposition is the laying down of sediments.

Front

Waves dropping sand on the beach

Back

deposition

Answer explanation

Waves dropping sand on the beach is an example of deposition, which is the process where materials are added to a landform. In this case, sand is being deposited onto the beach by the action of the waves.

Front

Deltas at river mouths

Back

deposition

Answer explanation

Deltas form at river mouths due to deposition, where sediment carried by the river is dropped as the water slows down upon entering a larger body of water. This process builds up landforms like deltas.

Front

Mudslide down a steep hill

Back

Erosion

Answer explanation

A mudslide is a movement of soil and debris down a slope, which is a process of erosion. Erosion involves the removal and transport of soil and rock, while weathering is the breakdown of materials, and deposition is the laying down of materials.

Front

Movement of rocks and sediments by glaciers.

Back

erosion

Answer explanation

The correct term for the movement of rocks and sediments by glaciers is erosion. Erosion involves the wearing away and transportation of materials, which glaciers do as they advance and retreat.

Front

Ponds filling with sediment and becoming marshes

Back

deposition

Answer explanation

Ponds fill with sediment through the process of deposition, where materials settle out of water and accumulate. This leads to the transformation of ponds into marshes, making deposition the correct answer.

Front

Layers of sediment at the ocean's bottom

Back

deposition

Answer explanation

The correct answer is deposition, which refers to the process where sediments settle and accumulate at the bottom of the ocean. Weathering and erosion involve the breakdown and movement of materials, not their accumulation.

Front

Muddy water carried by a fast river

Back

erosion

Answer explanation

The correct answer is erosion because muddy water being carried away by a fast-moving river illustrates the process of erosion, where soil and sediment are removed and transported by water.

Front

Flood waters moving soil from one location to another

Back

erosion

Answer explanation

Erosion is the process where flood waters move soil from one location to another, effectively transporting materials. Weathering involves breaking down rocks, while deposition refers to the settling of eroded materials.