1 decade ago. What is longshore drift? Wave crest: Highest point of a wave. Source(s): https://shorte.im/a9VDP. Anonymous. - Longshore drift is the movement of material along the shore by wave action. Transportation. The longer it blows for, the more energy can be transferred into the water, producing stronger waves. A longer fetch means the water’s had more opportunity to transfer kinetic energy and so we get stronger waves. Wind speed also has a significant effect on the size of waves. For instance, a wave hitting the coast of Cornwall may have travelled over 4000 miles to get there, all the way across the Atlantic. Katie is correct - the distancce over water that a given wind has blown. Maximum fetch is the distance from one coastline to the next landmass, it often coincides with prevailing wind direction (South West in the UK). The fetch of a wave. Wave height: Distance between trough and crest. Find out more about longshore drift here. The characteristics of waves are determined by the strength of the wind, its duration and fetch (distance a wave travels). The greater the fetch, the larger the wave. fetch definition: 1. to go to another place to get something or someone and bring it, him, or her back: 2. to be…. The stronger the wind, … 2. to cause to come; bring or draw forth: the noise fetched him from the cellar. Definition Of Fetch In Geography. The Fetch determines how powerful a wave may be. A less obvious control on the strength of generated waves is the fetch. Learn more. Fetch definition is - to go or come after and bring or take back. https://www.naturalnavigator.com/news/2018/03/what-is-fetch The stronger the wind the greater the friction on the surface of the sea and therefore the bigger the wave. The Natural Environment iGCSE Geography. Waves are generated by wind blowing over the sea. These are: Solution - when minerals in rocks like chalk and limestone are dissolved in sea water and then carried in solution. Wave trough: Lowest point of a wave. 0 0. This is the length of water the wind has blown over. Wave fetch: The distance of open water over which a wave has passed. How to use fetch in a sentence. For example, if the wind blows over an area of sea which is several thousand miles long, destructive waves will form as they have had the time to generate greater energy. It is the distance that the wave has travelled. The greater this is, the greater the effect on the water - thi higher the waves / … It is the distance that the wave has travelled. Whereas, a shorter fetch will result in smaller, constructive waves. The fetch is the distance of the sea, over which the wind has travelled. Beach material can be moved in four different ways. 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