PPT-Ch.8 How Waves Move Sediments

Longshore Drift Longshore drift has a very powerful influence on the shape and composition of the coastline It changes the slopes of beaches and creates long narrow shoals of land called spits that extend out from shore . http://www.youtube.com/watch?v=JN3BQxSroGs. So what is a wave?. Is it energy?. Is it force?. A . Wave. is a disturbance that . transfers. . energy from one place to another without transferring . matter. . Bellringer. : What is A wave? (define, use Ch.22 in your book to help you). What is an example of a wave?. General definitions of vibrations and waves. Vibration. : in a general sense, anything that switches back and forth, to and fro, side to side, in and out, off and on, loud and soft, or up and down is . 1 1. Sediments and volcanism are the most important agents of physical change on the deep-ocean floor2.Study o sediments is important to ocean Doppler Effect. ~apparent change in frequency of a wave due to the motion of the source of the wave.. If the object is moving towards the observer the frequency will appear to increase. If the object is moving away from the observer the frequency will appear to decrease. 20.3. Seafloor sediments. Ocean . floor is mantled with sediment. Sources. Turbidity . currents. Sediment . that slowly settles to the . bottom from . above. Thickness . varies. Thickest . in trenches – accumulations . Seismic . Waves. . are shock . waves . given off by earthquakes. . There are 2 types:. 1. . Body Waves. . originate from the . focus. (. F. ). travel . through. . the earth. . They’re used to locate . water. and . energy. . Anyone who has watched breakers roll into the shore, or been seasick on a boat, knows very well that waves move. But surprisingly, the water in waves doesn’t travel much at all. Waves transfer energy!. A wave does not carry matter . It only moves matter as it travels through it.. Waves. Compression (longitudinal) waves . are waves in which the particles of the medium move in a direction . Before the waves are made the particles are same distance apart. While waves moves through the medium the particles . compress. together, then they spread further apart (stretched areas)- . rarefaction.. Wave. Repeating disturbance or movement. Carries energy through matter and space. Vibrations. Anything that moves in a rhythmic patter. Up and down. Back and forth. What is a Wave. All waves are produced when something vibrates. During: Fault notes. After: Exit slip 4 questions. Day 1: Faults. Fault-. a breaks . in the earth’s surface along which rocks can . move.. Three . kinds of faults – determined by how the rocks move against each . Energy is moving, not water. orbital motion. energy is transferred via circular motions. water (and gull) return to original position. the wave form moves forward. Motion decreases with depth. At. a depth of ½ of the wavelength, the motion is not significant.. water. waves.... 4/5/2019. Physics 214 Fall 2010. 2. 1S-13 Slinky on Stand. Creating longitudinal compression waves in a slinky. What happens when you pull back and release one end of the slinky . ? . Earthquakes-Tsunamis. Graviational. attraction-Tides. Wind waves move energy, not matter. Wind waves- Growth. Wind strength- must be moving faster than waves. Wind duration-longer creates larger waves.