40 Questions
Which landform feature helps stabilize the ocean beach during stormy times?
Dune grasses
Which landform feature forms closer to the lagoon on a barrier island?
Salt marshes
What landform feature is formed by the deposition of sediment from a river into the ocean?
Deltas
Which body of water is typically found between a barrier island and the mainland?
Saltwater lagoon
Where are barrier islands commonly found in the United States?
Gulf coast
What is the purpose of barrier islands in protecting the coastline?
To act as a buffer against erosion
Which river flows into the Mediterranean Sea?
Nile River
What is the main cause of the erosion of the Nile Delta?
Impeded flow of sediment
What is the term used to describe the blocking of sand supply to beach compartments?
Sand starvation
Which event is associated with the rise of sea levels during ice ages?
Melting of glaciers
What causes the thermal expansion of the oceans during interglacial periods?
Warming of the atmosphere
How much would sea levels rise if all the remaining ice on Earth melted?
230 feet
Which of the following is NOT a reason for changes in sea level over geologic time?
Decrease in mid-ocean ridge activity
During an ice age, what happens to the land due to the weight of glaciers?
The land sinks
Which region is currently experiencing sea level fall due to crustal rebound?
Norway
Which of the following is a major type of stabilization structure mentioned in the text?
Groins
What is the purpose of a groin?
To interfere with the longshore current
What happens to the sand on the side of a groin where the longshore current runs into it?
It erodes away
What is the purpose of a breakwater?
To protect homes or businesses
What is the purpose of a sea wall?
To protect homes or businesses
What is beach replenishment?
The process of adding sand to a beach that has eroded
What is the purpose of relocation in coastal areas?
To save buildings from storm surge and hurricanes
Why does salinity vary a lot in coastal waters?
Due to the mixing of fresh water and seawater
What is the purpose of groins in coastal management?
To trap sand and prevent erosion
What is the effect of breakwaters on the beach?
They widen the beach and diminish it on the other side
Why are seawalls considered to be the worst type of stabilization structure?
They concentrate wave energy towards the beach
Which type of estuary forms as sea level rises and floods existing river valleys?
Coastal plain estuaries
What causes the freshwater dumped into the ocean to curve to the right?
Coriolis effect
Which region is known for having fjord estuaries?
New Zealand
Which of the following is NOT a type of estuary mentioned in the text?
Drowned river mouth estuary
What is the main reason estuaries are threatened?
Human population growth
Why are estuaries important?
They are breeding grounds for marine animals
Which latitude is known for having coastal waters with uniform temperatures?
Equator
What can cause an increase in salinity in coastal waters?
Evaporation
What is the term for water that is well mixed throughout the entire water column and has the same temperature?
Isothermal water
Which river flows into the Chesapeake Bay and contributes to anoxic waters?
The Susquehanna River
What causes the depletion of dissolved oxygen in the water during algal blooms?
Bacterial decomposition
Which organisms in the Chesapeake Bay are significantly harmed by oxygen depletion in the water?
Blue crabs and oysters
What is the environmental issue related to harmful algal blooms in Florida?
Enriched waters from Lake Okeechobee
What are lagoons and what are the three zones found in them?
Shallow water bodies with fresh, transitional, and salt water zones
Changing Sea Level: Test your knowledge on the geological rise and fall of sea levels, including the potential submergence of Florida under the ocean. Explore the history and factors that contribute to sea level changes in this informative quiz.
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