Waves Flashcards
Powerpoint Lesson 3 on Showbie
What is a wave?
Waves are a disturbance on the surface of the sea or ocean in the form of a moving ridge or swell
What are the main reason for changes on the coast?
Waves
Where do waves come from?
Waves are created by the action of the wind blowing over the sea or ocean.
What weather element makes a wave bigger?
Wind Speed
What are the 3 factors that depend the size & energy of the wave
- The fetch - How far the wind has
come - The strength of the wind
- How long the wind has been
blowing for
What is the Trough?
The lowest part of the wave
What is the crest?
The highest part of the wave
What is the wavelength?
The distance between 2 successive crests
What is the Circular Motion?
Waves have a circular or orbit motion
What is the wave height?
The vertical difference between the trough and the crest
What is the still water level?
The level of the sea if there is no wind. So no waves
What is the wave frequency?
The number of waves breaking on a beach per minute
What is a swash?
The rush of sea water up the beach after the breaking of a wave
What is backwash?
The flow of seawater back down the beach and into the sea.
Name the two types of Wave
- Constructive Wave
- Destructive Wave
