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Flashcards in The River Deck (17):
1

What is the load?

The material transported by a river as bedload, suspended load or dissolved load

2

What is the mouth?

Where a river ends, at a lake or sea

3

What is the source?

Where a river starts, usually in the mountains

4

What is the course?

The path a river takes as it flows from an upland area down through its valley until it enters the sea

5

What is a tributary?

A stream or smaller river that connects to a larger area

6

What are distributaries?

Finger-like river channels which branch away from a main river channel in a delta

7

What is a confluence?

The point at which two rivers meet

8

What is an estuary?

The tidal mouth of a river, with large, flat expanses of mud exposed at low tide

9

What is a flood plain?

The wide, flat floor of a river valley. It consists of sediments (alluvium) deposited by the river

10

What is a drainage basin?

The land that is drained by a river and its tributaries

11

What is eutrophication?

High nitrate levels combined with phosphates- results in loss of oxygen and the biological death of the river

12

What is the gradient?

The slope of the river profile, steep close to the source and gradually becoming gentler until the river reaches sea level

13

What is river discharge?

The volume of water carried by a river at any given time.

14

What is hydraulic action?

Is the erosion that is caused by the force of the moving water.

15

What is cavitation?

Is another form of hydraulic action.

16

When does cavitation occur?

When air bubbles in the water collapse and send out tiny shockwaves that weaken the banks of the river.

17

What is solution?

It is chemical erosion. The churning river water dissolves the rock into minute particles.