Term
________is the line that marks the contact between land and sea.
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Definition
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Term
1)_____is the area between the low tide line and the coast.
2)______is the area inland from the coastline, as far as ocean related features are found.
Choices:
Shore
Coast |
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Definition
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Term
| _____-generated waves provide most of the energy that shapes and modifies coastal zones. |
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Definition
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Term
What are crests?
What are troughs? |
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Definition
Crests: high point of a wave
Troughs: low points between waves |
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Term
______is a short walls built at a 90 degree angle to the shore and close to the beach. It's purpose is to trap moving sand.
Goal: to maintain/ expand beaches.
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Definition
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Term
| ______pair of structures extending into the ocean at river or harbor entrances; built to develop and maintain harbors against storm waves and sediment deposition. |
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Definition
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Term
What is a sea wall?
What is a breakwater? |
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Definition
A sea wall is a barrier built parallel to the shore and close to the beach in order to prevent waves from reaching the land behind the wall.
Breakwater is a barrier built offshore and parallel to the shore; protects near shore area and boats from the force of large breaking waves. |
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Term
Name four factors that wave size depends on.
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Definition
1) wind speed
2) Fetch ( the distance wind has traveled across open water)
3) water depth
4) Length of time wind has blown |
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Term
define these terms:
Offshore
Nearshore
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Definition
Offshore is the area seaward where waves break at low tide
Nearshore is the area between where waves break at low tide to low tide level. |
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Term
| Loosely describe sea stacks and how they are formed. |
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Definition
| Erosion produces sea caves. Then, sea arches form when sea caves from opposite sides of a rocky headland meet. Finally, the sea arch weakens and eventually collapses causing the formation of a sea stack. |
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Term
| contrast submergent and emergent coasts. |
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Definition
Submergent: land once exposed is submerged by the sea. River valleys become estuaries. Hilly terrains become collections of islands.
Emergent:Sea level drops exposing land that was covered by water. Waves start to erode the surface that was once submerged by water. This undercuts cliffs eventually leading to the collapse of cliff face.
Cliffs retreat; beach extends
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