When a river divides into channels or smaller rivers they are called its:

1. Tributaries
2. Distributaries
3. Meanders
4. Transporteries

Assertion (A): River meanders are bends of longitudinal courses.

Reason (R): Meanders are the result of both erosion and deposition under conditions of a gentle slope and sufficient water in rivers.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.

In the middle course of a river the gradient is gentle so the flow of the river slows down such that it appears like a snake over its floodplains forming which of the following?

1. Deltas
2. Gorges
3. Meanders
4. Rapids

…………… are moon-shaped dunes.

1. Dunes
2. Sand Dunes
3. Barchan
4. Seifs