✅3.1.3.1 - Coasts as Natural Systems Flashcards Preview

AQA A Level Geography - PHYSICAL > ✅3.1.3.1 - Coasts as Natural Systems > Flashcards

Flashcards in ✅3.1.3.1 - Coasts as Natural Systems Deck (18)
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1

What type of system is the coast?

An open system

2

What is an open system?

One which interacts strongly with other systems eg. sediment is often from rivers

3

What effect can feedbacks have on a system?

They can increase or decrease available inputs or outputs as well as enabling equilibrium

4

When is a system in dynamic equilibrium?

When inputs and outputs of energy and matter are balances

5

What type of events alter the coastline on a short term basis?

Storms

6

What can dynamic equilibrium be affected by over geological (longer) time periods?

Supply of sand
Energy of the waves
Sea level change
Location of the shoreline

7

What is a landform?

Individual features which are created by coastal processes

8

What is a landscape?

The entire area of sea, coastline and immediate land behind the sea front. Within the landscape are characteristic landforms

9

What are inputs?

Things entering the system from outside sources/systems

10

What are flows/transfers?

Processes of movement within a system

11

What are stores/components?

Parts of a system not necessarily in motion

12

What are outputs?

Material/energy moving out of a system

13

What are feedbacks?

Can be positive (leads to increase/amplification) or negative (leads to decrease/decline)

14

What are some of the inputs into the coastal system?

Energy
Wind
Precipitation
Fluvial Sediment

15

What are some of the flows/transfers in the coastal system?

Erosion
Longshore drift
Mass movement
Ocean currents
Riptides

16

What are some of the outputs from the coastal system?

Wave cut platforms
Headlands
Bays
Evaporation

17

What are some of the feedbacks in the coastal system?

Coastal management increasing erosion rates elsewhere
Mass movement decreasing erosion

18

What are some of the stores in the coastal system?

Beaches
Sand dunes
Spits
Bars