Question

1. what process mainly shapes valleys in mountainous areas?
2. which agent is responsible for forming sand dunes?
3. how do rivers change landscapes over time?
4. name a landform created by water erosion.
5. what effect do glaciers have on landforms?
6. what is a major effect of coastal waves?
7. how does wind affect desert landscapes?
8. what type of energy moves sand in a desert?
9. which sediment type moves most easily with water?
10. what is the most effective method of sediment transport in rivers?
11. what sediment types are commonly found near a river mouth?
12. what energy source can move pebbles uphill?
13. what happens to sediments as they’re transported over time?
14. what type of river flow can move large rocks?

Explanation:

1. Rivers change landscapes over time through erosion (wearing - away of land), transportation of sediments (carrying soil, sand, etc.), and deposition (dropping of sediments).
2. A landform created by water erosion is a canyon.
3. Glaciers erode landforms by plucking and abrasion, and deposit sediments to create landforms like moraines.
4. Wind energy moves sand in a desert.
5. The most effective method of sediment transport in rivers is suspension, where small - sized sediments are carried along in the water column.
6. Sediment types commonly found near a river mouth are sand, silt, and clay.
7. Glacial energy can move pebbles uphill as glaciers can push and carry materials against the slope.
8. As sediments are transported over time, they can be sorted by size and shape, and may undergo chemical and physical changes.
9. High - velocity or turbulent river flow can move large rocks.

Answer:

1. Through erosion, transportation, and deposition.
2. Canyon.
3. Erode by plucking and abrasion, deposit to create landforms like moraines.
4. Wind energy.
5. Suspension.
6. Sand, silt, and clay.
7. Glacial energy.
8. They can be sorted, and may undergo chemical and physical changes.
9. High - velocity or turbulent flow.