Question

Which of the following is true of ephemeral streams but NOT permanent streams?

a. They are subject to erosion of sediment.
b. They contain water only during rainfall.
c. They can be fed by large drainage basins.
d. They occur only in tropical regions.

Answer 1

The true statement about ephemeral streams, but not permanent streams, is that they contain water only during rainfall. the correct option is (b).

Step-by-step explanation:

Ephemeral streams and permanent streams are two types of streams with distinct characteristics.

Ephemeral streams: These streams flow only in response to precipitation events, meaning they contain water during and shortly after rainfall. They do not have a continuous flow throughout the year.

Permanent streams: In contrast, permanent streams maintain water flow throughout the year, regardless of rainfall. They have a consistent, continuous water supply, often sourced from groundwater or perennial springs.

Therefore, the characteristic of containing water only during rainfall is specific to ephemeral streams and is not true for permanent streams.

The true statement about ephemeral streams, but not permanent streams, is that they contain water only during rainfall.