How they are formed
how do coastlines form
through tectonic uplift/ subsidence
What are the main physical drivers
waves, tides, ocean currents, and wind
Does ice shape coastlines
NO to the NO
How long does it take for coastlines to form
millions of years
What are the key mechanisms
erosion, deposition, and transportation
What modifies coastlines
Waves, tides, and currents
How does the coastline respond to these forces
rock type, hardness, and structure of the coastline determine how it responds to these forces
What plays the key role in coastlines being created
tectonic activity
Do these work together in different timescales:
marine, atmospheric, and geological processes
Yes
What causes eustatic sea-level changes
variations in ocean water volume
Summary
This dynamic balance explains why some parts of a coast grow, others retreat, and the overall shoreline changes over time.