Ocean Waves and Tides

Constructive waves build up the beach as they deposit material, having a stronger swash and weaker backwash, whereas destructive waves remove the beach by eroding material, having a weaker swash and stronger backwash.

The strength of the wind, the amount of time the wind blows, and the length of the fetch.

A bay is a curved inlet of soft rock that erodes easily, whereas a headland is a rugged point of hard rock that erodes slowly, formed by the erosional action of waves.

<p>The more joints, cracks, and faults there are in a rock, the weaker it is and more susceptible to erosion by waves.</p> Signup and view all the answers

<p>The four types of erosion are: hydraulic action, abrasion, attrition, and solution. Each type involves a distinct process of erosion, such as the force of water, scraping, grinding, and chemical dissolution.</p> Signup and view all the answers

<p>Through erosion, a headland is transformed into an arch, which then collapses to form a stack. Over time, the stack is eroded further to form a stump.</p> Signup and view all the answers

<p>A wave-cut platform is a flat area formed at the base of a cliff, created when the sea erodes the cliff between high and low water marks, leading to the collapse of the cliff face and the formation of a platform.</p> Signup and view all the answers

<p>Longshore drift is the process by which material is moved along the coast when waves approach at an angle, carrying sediment and depositing it at a new location, leading to the formation of landforms such as spits and bars.</p> Signup and view all the answers

<p>A spit is a long, thin ridge of deposited material that extends from a headland, whereas a bar is a landform that forms when a spit grows across a bay, joining two headlands together.</p> Signup and view all the answers

<p>Changes in wind direction can cause a hooked end to form on a spit, and can also influence the direction of longshore drift, leading to changes in the shape of the coastline and the formation of different depositional landforms.</p> Signup and view all the answers