Coast Flashcards
Coasts refer to an area that is affected by biological processes in additional to tectonic activity
True or false?
True
Coastlines have not come into equilibrium with modern sea levels
True or False?
True
Coastal cells in Southern California are smaller due to the location on an active, leading edge of a continent
True or false?
True
Seawalls protect property snd decrease beach erosion
True or false?
False
Fringing reefs are separated from land by a lagoon
False
What is the name given to long-term change in sea level?
Eustatic change
What is the name for a coast in which the dominant processes are those that remove coastal materials?
Erosional Coast
How much of the United States coastline is considered to be depositional?
30%
Which coastline is depositional coast?
Florida
Which feature marks the shoreward limit of marine erosion on a rocky coast?
Sea cliffs
What is the rate if shore erosion dependent on?
Local range of tides
What is a fjord
Deep narrow bay modified by glaciers
What type of beach is likely to exist on coastline covered with sea caves?
erosional beach
An erosion coast that has little tidal variation
Can erode quickly because wave action is concentrated near one level for long times
What is true of backshore?
It can include dunes and grasses
What is usually the highest point on a beach?
Berm crest
What is a coastal cell?
A section of coastline that has balanced input and output of sand
What is responsible for increasing beaches’ slope
The swash
What is the eventual fate of an erosional beach?
They become a depositional beach
What creates a moraine?
Glaciers
What type of depositional feature migrates slowly landward as sea levels rise?
Barrier island
What is a tombolo?
A bridge of sediment that connects to a sea island to a mainland
Barrier islands are?
Parallel but separate from land
Where do most of the atolls on earth exist?
Pacific Ocean
Which of the following are formed when longshore currents slows?
Sand spits
How have parts of Florida’s coast been extended
Mangroves
What type of estuary is characterized by rapid river flow and low tide range?
Salt wedge estuary
Where does most of the sediment on the Pacific coast originate from?
Granite rock
