The River Exe

Question 1

Relief

Answer 1

The shape of the land and height above sea level.

Question 2

Geology

Answer 2

The underlying rocks of the river.

Question 3

Land use

Answer 3

The different uses of the land, for example farmland, grassland, pasture, moorland, urban area. Land use can alter river discharge.

Question 4

Cross profile

Answer 4

Shows a cross-section of a river’s channel and valley at a certain point along
the river’s course. Nearer the source the Cross profile will show a v shaped
river channel, as erosion increases towards the mouth the cross profile
becomes wider.

Question 5

Topography

Answer 5

Describes the physical features of an area of land. These features typically
include natural formations such as mountains, rivers, lakes, and valleys.
Manmade features such as roads, dams, and cities may also be included.

Question 6

Peat bog

Answer 6

Wet spongy ground of decomposing vegetation; has poorer drainage than a swamp; soil is unfit for agriculture but can be cut and dried and used for fuel. The presence of peat bogs reduces flooding as water from precipitation is stored in the bogs and released slowly in the river channel, increasing lag time.

Question 7

Drainage ditch

Answer 7

A narrow channel that is dug into peatland to encourage water to flow into rivers. They were built in peatland areas due to a rise in demand for agriculture. Draining peatland removes excess soil moisture and the land can then be used for agriculture.