Coasts
The term for a large body of salt water that is often bordered by land.
What is a sea?
The process of breaking down rocks into smaller pieces over time.
What is weathering?
What natural force primarily causes erosion along coastlines?
What is the sea or ocean waves?
This is often built along coasts to prevent the inland movement of sand and water.
What is the seawall?
True or False: Coastal erosion always results in the loss of land.
False (Coastal erosion reshapes coastlines but can also lead to the creation of new landforms like sea stacks)
This is a sandy shore of a sea or ocean.
What is a beach?
The process when the water freezes in the cracks of rocks and expands, causing the rock to break apart.
What is freeze-thaw weathering?
This term describes the movement of soil and rock particles by waves, water, or gravity.
What is erosion?
The process where sand is added to a beach to increase its size and protect the coast from erosion.
What is beach nourishment or beach replenishment.
What term describes the distance over water that wind blows in a single direction?
What is fetch?
This process by which sand, stones, and sediments are moved along a beach by waves coming in at an angle.
What is longshore drift.
A type of weathering involves the chemical alteration of rock, such as when limestone is dissolved by acidic rainwater.
What is chemical weathering?
The name for the type of coastal erosion that occurs when waves hit rocks and compress the air in cracks.
What is hydraulic action.
This barriers are built at the right angles to the coast to prevent the movement of sediment and help build up the beach.
What is groynes?
True or False: Wetting and drying weathering only affects clay-rich rocks.
True (Primarily affects clay-rich rocks due to their expansion when wet and contraction when dry, but can affect other materials under the right conditions).
These are formed by the erosion of rock by the sea and typically appear as a large pillar of rock detached from the main coastline.
What is sea stack?
This type of weathering is caused by the growth of plant roots or the burrowing of animals in rocks.
What is biological weathering?
True or False: Beaches are a form of coastal defense against erosion.
True
This determines one of the reasons for using human engineering to protect the coastline.
What is the cost of the properties.
Fetch affects the size of these, which are created by wind blowing over the surface of the water.
What are waves.
These features are formed by wave erosion hollowing out cliff faces, typically at points of weakness such as joints or faults.
What is sea cave?
This type of rock is most susceptible to chemical weathering caused by acid rain?
What is limestone?
Erosion of the coastline occurs at different rates based on the types of rock, the resistant rock is eroded faster which forms ________.
What is a bay.
The ________ always win!
What is sea.
This occurs when the swash is stronger than the backwash. It is typically associated with constructive waves that help build up beaches.
What is deposition?