Waves And Rips Flashcards
What is a rip current?
A rip current is a body of water moving out to sea. People drown because they resist too much
Common signs of a rip are
Discoloured brown water due to sand stired up, foam on the surface extending beyond the break, debris floating seaward
Types of waves
Plunging (dumping) waves Spilling wave (safest) waves Surging wave (most dangerous)
3 factors that determine the size of waves
Intensity of the wind, length of time the wind blows, distance the wind blows
How to escape from a rip current
If you are a strong swimmer, swim at a 45 degree angle away from the rip but if a weak swimmer, wait till the rip stops and swim 30 meters away from the rip
DRSABCD
Danger- ensure area is safe Response (cows) Send for help- 000 Airway-open mouth Breathing- check for breathing Cpr- 30 compressions Defib
Beach warning signs
Warning signs use a yellow background and include simple symbols
What are regulatory signs
They are more important than warning signs because they inform prohibited activites at the beach
What are information signs
They are there to provide info at the beach
What are safety signs
Used to indicate safety provisons
Ways to equalize
hold your nose and swallowing or holding nose and blowing out
Plunging wave
A plunging wave occurs when the ocean floor is steep or has sudden depth changes,
Spilling waves
These аrе produced bу а gently sloping sea floor, which causes thе wave tо peak gradually
Surging waves
type оf wave comes іn out оf relatively deep water onto steep beaches, аnd rather thаn break it will surge up thе beach.
Why do waves break?
Waves break when the shape of the wave becomes too steep and this usually happens as waves travel from deep water to shallow water
