Waves
What are the two main types of waves?
Destructive and Constructive
Name one example of an erosional landform
Cliff, cave, arch, stack or stump
What is longshore drift?
The movement of sand up the coast due to angled waves
Why are fences and walkways used on sand dunes?
To protect vegetation and stop human damage
What natural forces in our solar system influence the tides?
What is the name of the movement of water up the shore?
Swash
Name one example of a depositional landform
What happens to beaches if longshore drift is not managed?
They can lose sand and shrink over time, causing erosional issues
How do ripraps help protect the coastline?
Large rocks absorb the wave energy and prevent erosion
What causes ocean currents?
Temperature and the wind
Which type of wave has a strong backwash and a weak swash?
Destructive waves
How do sand dunes protect coastal areas?
They prevent erosion and replenish the beach with sand
What structures have been built in Adelaide to help stop longshore drift?
Groynes
What is dredging?
Removing sand from the ocean and pumping it back onto the beach
What is the process where waves gradually wear away rock formations on the coast?
What is the difference between erosional and depositional coastal landforms?
Erosional landforms are created by destructive waves that remove material, and depositional landforms are built by constructive waves depositing sediment
How much money did the state government say they were spending on coastal management in Adelaide in 2023?
7.4 million dollars
What causes waves to form?
Gravity from the moon and or wind
Name two ways humans can manage longshore drift from eroding beaches
Sand carting, dredging, sand replenishment, groynes, sand dune management