Natural Systems , Coastal Systems And Climate Change

Question 1

What is the definition of inputs

Answer 1

When matter or energy is added to the system

Question 2

What is the definition of stores

Answer 2

Where matter or energy builds up

Question 3

Definition of flows

Answer 3

Where matter or energy moves from one store to another

Question 4

What does positive feedback mean

Answer 4

Positive feedback is where the dynamic equilibrium of the system is pushed forward and in a cycle of increasing

Question 5

What does negative feedback mean

Answer 5

Negative feedback is where different components counteract the change is inputs or outputs

The system responds by keeping the system closer to its previous state

CO2 is emitted in atmosphere - extra co2 causes plant growth - plants remove CO2 - co2 is atmosphere decreases

Question 7

What is the 5 subsystems of earth

Answer 7

Hydrosphere
Biosphere
Cryosphere
Atmosphere
Lithosphere

Question 8

What are 2 sea level change factors

Answer 8

Subsistence - coastal areas sinking because of excess groundwater extraction - makes the sea level relatively higher - isostatic

Water volume - changes due to thermal expansion or addition of more water (ice melt)

Question 10

What are some adverse effects of climate change in the coast

Answer 10

Increased coastal flooding and erosion

Major towns and cities under risk from rising sea levels as well as high grade agricultural land

Major road and rail links near the coast are at risk as well as several power stations on low lying ground