EQ4

Question 1

What is meant by a long profile river?

Answer 1

This is when you measure the gradient of the river from source to mouth.

Question 2

How does the river Eden’s landscape change along its long profile
(upper/middle/lower). Consider: channel shape, valley profile, gradient,
discharge, velocity and sediment size and shape?

Answer 2

The river Edens river changes as it goes down as the source is thin with a v shaped valley and it widens as it goes to the middle course then you get to the mouth.

Question 3

What are the reasons for these changes?

Answer 3

This is mainly due to there being a need for more water to go down the river.

Question 4

Compare hydraulic action with abrasion

Answer 4

Hydraulic action is when water its self hits against the rock where as abrasion is when rock erosion the cliffs

Question 5

Define weathering

Answer 5

This is where the atmosphere water and animals all affect the break down of rocks.

Question 6

Compare freeze thaw and biological weathering

Answer 6

Freeze thaw is when water gets into rocks and expands and erodes the rock, biological is where animals and roots erode rock.

Question 7

Compare traction with suspension transport

Answer 7

Traction is where rocks roll on the river bed suspension is where fine light materials carry through the water.

Question 8

Compare a flashy and subdued hydrograph

Answer 8

Flashy is where there is rain then a really quick flood

Subdued is when there is a stable time for there to be a flood.