Coasts As Natural Systems

Question 1

What are Closed and open systems

Answer 1

Closed = input and output of energy and matter

Open = input and output only of energy

Question 2

What Is dynamic equilibrium

Answer 2

When the inputs and outputs are balanced

Question 3

Explain negative feedback

Answer 3

When a system lessens the effect of the original change therefore reversing it

Question 4

Explain Positive feedback

Answer 4

A change causes further change so the effects are amplified

Question 5

An example of negative feedback

Answer 5

Sediment is eroded from beach 
Sediment forms an offshore bar
Waves break further away so less erosion
Sediment deposited on beach 
Beach in dynamic equilibrium

Question 6

Inputs into coasts examples

Answer 6

Waves
Wind
Tide
Sediment

Question 7

Components of coasts systems example

Answer 7

Arches
Stacks
Caves
Spits
Tombolo

Question 8

Output examples in coast system

Answer 8

Sediment loss

Dissipation

Question 9

Human factor influencing costal landform example

Answer 9

Buildings put pressure on cliffs may become unstable

Question 10

Geological factors influencing coast

Answer 10

Rock type

Soft rocks erode more quickly and easier

Question 11

Climactic factors influencing the coast

Answer 11

Climate change

Melts ice creating higher sea levels