Geography Coastal Flashcards
What is coastal erosion?
The process by which coastlines are eroded by natural forces such as waves, currents, and tides.
Name one type of coastal erosion.
Hydraulic action.
True or False: Coastal erosion can only occur during storms.
False.
What is hydraulic action?
The force of water hitting the coast, causing rocks to break apart.
Fill in the blank: __________ is the wearing away of the coastline due to wave action.
Coastal erosion.
What is abrasion in the context of coastal erosion?
The process where waves carry sand and pebbles that grind against the coastline.
What type of wave is characterized by a long wavelength and low frequency?
Long waves.
Multiple Choice: Which type of wave is most responsible for coastal erosion? A) Swell waves B) Tsunami C) Tidal waves D) Surf waves
D) Surf waves.
What is the primary source of energy for ocean waves?
Wind.
True or False: Tidal waves are caused by the gravitational pull of the moon and sun.
True.
What happens during wave refraction?
Waves bend as they approach the shore, changing their direction.
Fill in the blank: __________ waves are generated by distant storms.
Swell.
What is the effect of wave energy on coastal erosion?
Higher wave energy increases the rate of coastal erosion.
Name one human activity that can exacerbate coastal erosion.
Construction of sea walls.
Multiple Choice: Which type of wave has the highest energy? A) Swell waves B) Breaker waves C) Tidal waves D) Long waves
B) Breaker waves.
What is the difference between constructive and destructive waves?
Constructive waves build up the beach, while destructive waves erode it.
True or False: Destructive waves have a steep profile and a short wavelength.
True.
What is the term for the gradual loss of beach material due to wave action?
Beach erosion.
Fill in the blank: __________ is the process by which rocks and sediment are transported along the coastline.
Longshore drift.
What is the significance of wave height in coastal erosion?
Higher wave height typically results in greater erosive force.
What type of erosion results from the chemical breakdown of minerals in coastal rocks?
Corrosion.
Multiple Choice: Which type of wave is typically associated with storm conditions? A) Swell waves B) Tsunami C) Storm waves D) Ripples
C) Storm waves.
What is the role of vegetation in coastal erosion?
Vegetation helps stabilize the soil and reduce erosion.
True or False: Coastal erosion can have a positive impact on coastal ecosystems.
True.
