Geo Quiz 5a Flashcards
The maximum depth of water affected by a wave’s passage is the wave___?
Base
The engergy of waves is concentrated on points and headlands by the process of
Refraction
The circular motions of the water beneath a wave are called
Orbitals
Most beaches have the largest waves in the
Winter
The horizontal distance from one wave crest to the next crest is the
Wavelength
If you are caught in a rip current you schould
swim parallel to the shore
Tsunamis are usually caused by
Earthquakes
Upper Newport Bay and Bolsa Chica are good examples of
Estuaries
Which of the following protective measures actually increases the erosion on a beach?
Seawall
The source of the most sand on a beach is
Sediment carries by rivers
The greatest loss of sand from beaches occurs as
The sand flows down submarine canyons
Between the foreshore and the backshore of a beach you will find
The berm
In the winter beaches are
Composed of more mafic sand
A sand bar attached to the coast on one end is called
Spit
A tied island is connected to the coast by a sandbar called a
Tombolo
A coastal feature formed by erosion is
Sea Stack
The steepest part of a continental margin is the
Continental Slope
A sequence of rocks that is thought to be a slice of oceanic crust is called a
Ophiplite
The shallowest part of an ocean basin is the
Continental shelf
Which is not part of an ophiolite sequence
Rhyolite
Submarine canyons are carved out by
Turbidity currents
Which of these would indicate that a volcanic island is young
Fringing Reefs
The site where new oceanic crust forms is
Mid-ocean ridges
The turbidity currents that followed the 1929 Grand Banks Earthquake lasted over
10 hours
Chemosynthetic bacteria found on mid-ocean ridges get energy by consuming
Hydrogen Sulfide
