Fluvial Geomorphology

The area of land drained by a river system including the ground water is known as a ...

• Watershed

• Catchment area

• Drainage basin

• Escarpment

The high lying area separating two drainage basins is known as a ....

• watershed

• catchment

• base level

• drainage basin

The place where a tributary joins the main stream is called the...

• conference

• confluence

• intersection

• watershed

Water that flows in layers in a river channel is known as.....

• rapid flow

• laminar flow

• turbulent flow

• layer flow

Turbulent flow occurs when a river flows ....

• over a smooth river bed

• through a lake

• through a meander

• over an uneven rock surface

Water run-off flows from a higher level to a lower level due to...

• friction

• atmospheric pressure

• gravity

• base level change

A permanent river flows all year round because it ...

• flows only in wet areas

• receives a lot of surface run-off

• intersects the water table all year round

• does not intersect the water table

An episodic river flows ....

• all year round

• only in the wet season

• only after heavy rain

• only in the winter season

Which of the following is not true of an exotic river

• flows all year round

• intersects the water table in the wet season

• does not intersect the water table.

• initially flows through a high rainfall area.

The Orange River at Uppington in the Northern Cape and the Nile River in Egypt are good examples of a ...

• exotic river

• periodic river

• primary river

• episodic river