Transportation.

Question 1

Traction

Answer 1

Large, heavy pebbles are rolled along the river bed. This is most common near the source of a river, as here the load is larger.

Question 2

Saltation

Answer 2

Pebbles are bounced along the river bed, most commonly near the source.

Question 3

Suspension

Answer 3

Lighter sediment is suspended (carried) within the water, most commonly near the mouth of the river.

Question 4

Solution

Answer 4

The transport of dissolved chemicals. This varies along the river depending on the presence of soluble rocks.

Question 5

Deposition

Answer 5

When the river loses energy, it drops any of the material it has been carrying. This is known as deposition.