Constructive wave
The waves build up a beach and has strong swash and a weak back swash. Relatively flat and gentle waves
Destructive waves
Relatively steep high waves , little swash and strong backwash
Tides
Tides caused by gravitation pull of the moon as it orbits the earth
What causes waves to form ?
The moons gravitational pull and the friction from wind going over the sea
What is negative feedback in geography?
When a process becomes less effective over a time- example constructive waves making beach steeper.