Coastal Geology (Grade 9)
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The shape of the shoreline has only a small influence on the magnitude of the tides experienced at that location.
Barrier islands are stable places to build homes and hotels.
An atoll would be an island formed by .
- an underwater volcano
- sediments deposited by a river
- a coral reef
- a projection from the mainland
A small ridge of sand or gravel just offshore from a beach is called a .
The main process that forms a beach is .
What is a narrow, sandy island, formed from a large bar, lying off the coast of the mainland?
- barrier island
An example of land formed by wind deposits is a .
- sand dune
- sea stack
Estuaries are coastal basins that tend to be compared to other coastal geological features.
- old; long-lived
- old; short-lived
- young; long-lived
- young; short-lived
Which of the following are sources that tend to increase the volume of sand on a beach?
- cliff erosion, longshore transport, offshore transport
- river sediment, cliff erosion, longshore transport
- offshore transport, wind erosion, river sediment
- wind erosion, longshore transport, river sediment
Seawalls are often constructed along shorelines to protect property and infrastructure. Which describes a consequence of seawall presence?
- seawalls reduce coastal water energy
- seawalls trap sand and create beaches
- seawalls impede longshore drift of sediment
- seawalls increase sand erosion from coastlines