Section C- Uk Physical Landscapes Flashcards

Question

What pattern does longshore drift create

Answer 1

Zig zag Waves hit the coast at an oblique angle and the backswash carries material at a right angle back towards the sea

Answer 2

Traction Suspension Saltation Solution

Answer 3

Dissvoleved particles move along with the current of the water

Answer 4

Pebble sized particles bouncing along the sea bed

Answer 5

Small particles like silt and clay are carried along in the water collide

Answer 6

Large particles like boulders are rolling across the river bed by the force of the water

Answer 7

When water carrying sediment loses energy and slows down. So material is let go

Answer 8

The delay between peak rainfall and peace discharge

Answer 9

Heavy rainfall- water arrives to quickly yo be absorbed into the ground- high surface run off Relief- if a river is in a steep sided valley water will rush towards the river

Answer 10

Land use- pavements are impermeable- increasing surface run off Deforestation- soil reaches capacity quicker as trees cannot absorb water

Answer 11

The volume of river water flowing per second Measured in Cumecs

Answer 12

The water flows over hard rock Underneath the hard rock there is soft rock that is being eroded by the water The soft rock starts the undercut Eventually the hard rock at the top becomes unstable and collapses, pushing the water fall back The fallen hard rock swirls around at the bottom of the water fall creating a bigger plunge pool

Answer 13

Found in upper course where the river is tiny and has little energy Because of the little energy the river cannot cut through hard rock and obstacles so instead it winds around them This creates a pattern of spurs

Answer 14

The current in faster in the iutet bend because the river channel is deeper. The outer bends erode The current goes slower on the inner bends because it is shallower. Because of this material is deposited

Answer 15

Continued erosion on the outerbanks of two adjacent bends causes the neck of land between them to become very narrow In a high flow event( like a flood) the river breaks through the narrow neck creating a new channel The new shortcut has a steeper gradient so the water abandons the old meander loop

Answer 16

Upside down U

Answer 17

Sand deposited by longshore drift is moved up the beach by the wind Obstacles cause the wind speed to drop so sand is deposited

Answer 18

When two headlands are joined together by a spit. A lagoon forms behind the bar

Answer 19

At a sharp bend in the coast line

Answer 20

Longshore drift deposits sand and shingle past the bend and deposits it in the sea. Strong winds can curve the end of the spit

Answer 21

A salt marsh

Answer 22

Where the land meets the sea They often form mudflats as water is tidal. When the water retreats it deposited silt

Answer 23

Wide valley floors in either side of a river which occasionally floods

Answer 24

Levees are mountains of sediment on either side of the river bank They are formed by repeated flooding When the river floods the biggest sediment is dumped on the river bank.