Coasts

Question 1

what is the littoral zone?

Answer 1

wider coastal zone including adjacent land areas and shallow parts of the sea just offshore
- exposed to the air at low tide and underwater at high tide

Question 2

what do we say they are in when the inputs and outputs are balanced and equal?

Answer 2

they are in dynamic equilibrium

Question 3

what are the four inputs?

Answer 3

marine (waves, tides, storm surges)

atmospheric (weather/climate)

land (rock type and structure, tectonic activity)

people (human activity, coastal management)

Question 4

what are the processes in a coast?

Answer 4

weathering

mass movement (movement of surface material)

erosion

transport (movement off sediment)

deposition (dropping off sediment)

Question 5

what are the outputs?

Answer 5

• erosional landforms (stack, arch)
• depositional landforms (spits)
• different type of coasts (sandy beach, coral reef, wetlands, rocky shores)

Question 6

what is a sediment supply? and an example?

Answer 6

• weathering and erosion produce outputs (sediment), this is then transported and deposited to produce coastal landforms

eg the wash & north norfolk beaches

Question 7

what are the four things used to classify a coast?

Answer 7

• geology (concordant/discordant)
• energy (high or low)
• balance (between erosion and deposition)
• sea level (create sub or emergent)