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Waves tides and shorelines. By Taylor Chelsea And Tiffany. Wave Length and Height. Length: the wave length can be measured in different ways: crest to crest trough to trough the distance of 1 crest and 1 trough Height:
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Waves tides andshorelines By Taylor Chelsea And Tiffany
Wave Length and Height • Length: the wave length can be measured in different ways: crest to crest trough to trough the distance of 1 crest and 1 trough Height: the height is indicated by amplitude which measure the height of the crests, depth of troughs from the rest the position.
Crest and Trough • The crest is a section of the wave that is above the undisturbed part. It is the highest point of the wave. • The section that rises below the undisturbed position is the trough.
Waves and Shorelines • How do waves affect shoreline? The waves carry sediment of the ocean on shore making beaches. During strong storms the heavy currents have a huge under tow . After so many years the under tows eventually erode bedrock and sandstone.
Types of Waves • Shore Dump- a wave that builds steeply before powerfully breaking down • Spilling Waves- are typical breaking waves • Surging Waves-are dangerous and very powerful and knock you off your feet
What are Currents? • Currents are smooth and steady movements of water. They move in a specific source. There are four types of currents: surface currents, tidal currents, deep water currents and measuring currents.
Technologies used to control damage to shorelines • Some things used to control the damage to shorelines are: - planting trees and vegetation -some beaches have bricks along the edge so there are less chances of sand washing away - putting up boards around the edge that way you don’t have to worry about the land washing away in high tide.
How are waves and tides generated? • Waves are created by the friction of the wind over the water. This has them eventually arrive to shore washing away loose sand. • tides are made because the moon and earth are attracted to each other and the moon draws everything from the earth making high and low tide.
Solar and Lunar Tides Ancient philosophers noticed that the tides move with the motion of the moon. This causes the moon to move 1.5 inches a year drifting away from the moon http://www.dalefield.com/earth/Tidal_Image.jpg
Sources Science Power 8 page 282 http://www.mamashealth.com/surf/waves.asp http://science.jrank.org/pages/1915/Currents.html http://zonalandeducation.com/mstm/physics/waves/partsOfAWave/waveParts.htm#crestAndTrough http://erosioncontrol.ws/ http://earthsci.org/processes/weather/waves/Waves.htm http://chalk.richmond.edu/education/projects/webunits/cycles/tides.html http://www.worldbookonline.com/student/article?id=ar557440&st=solar%20and%20lunar%20tides&gr=Welcome+Scoilnet+user