Action of Waves - SS2 Geography Past Questions and Answers - page 2
What is the name of the mechanical action of waves and water pressure that dislodges and transports sediments?
Attrition
Corrosion
Solution
Hydraulic Action
Which term describes the number of wave cycles passing a point in one second?
Amplitude
Frequency
Wavelength
Period
What are the distinct zones of a coast, including the shoreline, nearshore, and offshore, collectively called?
Coastal features
Coastal processes
Coastal zones
Coastal environments
Which erosional process involves rocks and sediment particles colliding and breaking down into smaller, smoother pieces due to wave action?
Corrosion
Attrition
Solution
Hydraulic action
What is the primary driver of longshore drift, which results in the movement of sand and pebbles along the coast?
Winds
Tides
Earthquakes
Glacier actions
Explain the process of wave formation and the role of wind in creating waves.
Waves are formed by the wind blowing across the surface of water, which generates disturbances that travel as wave energy through the water.
What factors influence the rise and fall of tides, and how does this impact coastal areas?
Tides are primarily influenced by the gravitational pull of the moon and the sun. This can lead to varying sea levels, affecting coastal ecosystems and navigation.
Describe the erosional process of corrosion and its effects on coastal rocks.
Corrosion is the chemical dissolution of rocks by seawater. It gradually wears away coastal rocks, leading to their erosion and shaping the coastline.
How do spits form, and what role does longshore drift play in their development?
Spits form as sediment accumulates and extends from the mainland into a body of water. Longshore drift, the movement of sediment along the coast, contributes to the formation of spits.
Discuss the significance of bars in coastal environments and their impact on water circulation.
Bars are submerged ridges of sediments that influence water circulation and create sheltered areas like lagoons. They play a role in shaping coastal ecosystems.