Coasts

?
What is a sediment cell?
A stretch of coastline where movement of material is contained. Includes inputs (sources), transfers (flows) and stores (sinks)
1 of 22
What is a sediment budget?
Can be used to analyse and describe different sediment inputs and outputs on the coast to predict changes
2 of 22
What are systems?
Groups of related objects, physical or human
3 of 22
What is an open system?
Transfers both matter and energy across its boundary to the surrounding environment.
4 of 22
What is a closed system?
Transfers energy but not matter across its boundary to the environment.
5 of 22
What are inputs?
Physical: natural occurring, like water, raw materials and land
Human: money, labour and skills
6 of 22
What are outputs?
The results of processing, usually a new product. e.g. landforms and shape of a coastline
7 of 22
What are the two types of wave and what is the difference?
Constructive: strong swash (brings sediment up beach) and weak backwash (cant remove the sediment) so forms a wide sloping beach.
Destructive: stronger backwash than swash. so build up steeper beach, more powerful waves
8 of 22
What causes refraction of sea waves?
Friction with the sea bed as waves approach the shore causes the wave front to become distorted or refracted as velocity is reduced.
9 of 22
what is wave height affected by?
Wind speed
Wind duration
Fetch - distance of wind travel over open water
Depth of water / roughness of sea bed
Direction and speed of tide
10 of 22
what is a wave cut platform?
the narrow flat area at the base of a sea cliff. Formed by destructive waves causing under cut
11 of 22
Erosion will occur...
When there is less sediment arriving at the beach and more leaving.
12 of 22
Deposition will occur...
When there is more sediment arriving than there is leaving. This is longshore (littoral) drift
13 of 22
What is abrasion?
The process of scraping or wearing something away e.g little rocks and sand create friction
14 of 22
What is attrition?
The erosion of sediment by gradually erosion of its own sediment which become smoother and rounder
15 of 22
What is the sand motor?
Experiment in the management of dynamic coastline. It is a buffer against sea level rise. In South Holland in the Netherlands
16 of 22
What is a tombolo?
A depositional landform, island is attached to mainland by a spit or bar.
17 of 22
What is a fjord?
a submerged landform, a long, narrow inlet with steep sides or cliffs, created by a glacier.
18 of 22
What is a ria?
a long, narrow inlet formed by the partial submergence of a river valley.
19 of 22
What is a spring and neap tide?
A spring tide is in parallel, occurs at full moon, strong tide.
A neap tide is perpendicular, occur at quarter moon, weaker tide.
20 of 22
Explain isostatic rebound
It is the rise of land masses that were depressed by the huge weight of ice sheets during the last ice age. This can cause sea levels to rise
21 of 22
Suggest how you may protect a cliff face from erosion?
Net against wall, wall anchor, sea wall curved to reflect wave force, animals grazing so no tree roots
22 of 22

Other cards in this set

Card 2

Front

Can be used to analyse and describe different sediment inputs and outputs on the coast to predict changes

Back

What is a sediment budget?

Card 3

Front

Groups of related objects, physical or human

Back

Preview of the back of card 3

Card 4

Front

Transfers both matter and energy across its boundary to the surrounding environment.

Back

Preview of the back of card 4

Card 5

Front

Transfers energy but not matter across its boundary to the environment.

Back

Preview of the back of card 5
View more cards

Comments

No comments have yet been made

Similar Geography resources:

See all Geography resources »See all Coastal environments resources »