Earthquake powerpoint template

Earthquake Powerpoint

Transcript: #3:the third way is to not have many glass objects because for example if you have a glass table something might fall on top and it can be really dangerous to have glass all over the floor by:Gisselle Vargas #3:put flexible pipes which will prevent pipes from breaking.If they break gas lines and water lines will leak. #4:build triangle structures because triangles are th strongest shape #1:one way to reduce earthquake damage is to make our buildings more flexible by using wood or steal instead of brick and concrete because there not flexible. #1:one way to make our class and home more earthquake safe is by not having many large windows around any places were children might be. Earthquake Powerpoint Earthquakes at the other end of it is an ink pen and underneath that pen is a piece of paper rolled around a cylinder.The cylinder rotates so that the pen continuously To locate an earthquakes epicenter you need seismic wave charts.First you need to find the arrival time of P-waves and S-waves by using the seismic chart.The first large spike on the chart is the P-wave and the second large spike is the S-wave.You have to find the difference between the p and s waves arrival.For example if a P-wave arrived at 10;23:00 and a S-wave arrived at 10;26:22 the difference in arrival is 3minutes and 22seconds.You line up the edge of your paper with the y-axis of the time travel chart.Make a small line on the paper where the origin touches the graph.Make a second line on the paper where the difference in arrival time touches the graph.In this example we would place a small line on the paper where zero touches and where 3min22 seconds.You slide the piece of paper across the graph always keeping the 0 line touching the p-wave curve.When the line marking the difference in arrival time meets the s-wave curve dont move the paper anymore.Following the edge of the paper read the distance from the epicenter off the x-axis.This is the distance that particular seismic station was from the epicenter.Record the distance.Repeat the process with other two seismic wave charts from.Record the distance. other locations The fault is marked before ,during,and after the fault ruptures.As rocks slowly move past each other, elastic strain energy builds up along the strike-slip fault.Eventually rocks rupture and slip along the fault.The sudden slip sends complex waves radiating out in all directions into the surrounding rocks.The energy in the waves causes the shaking during an earthquake.Elastic strain energy that was stored in the rocks is partly released by the breaking and moving,and partly released as seismic waves draws an ink line along the moving paper.If there is no earthquake the rod does not swing and the pen stays in place and the ink line is straight. Some hazards that result from an earthquake include fires,landslides,loose sediment,and tsunamis.Fire is the most common hazard that occurs following an earthquake.Fires usually occur when earthquakes rupture gas pipes and sever electrical lines. #4:another way is to have a place to hind under from falling objects during an earthquake #2:another way is to not have heavy objects on top any tall shelf or cabinet because during an earthquake it can fall on top on anybody and can harm someone #2:another way is to install base isolators under the sand so that they can absorb seismic waves A seismograph works in a very simple way.A heavy weight is fastened to a rod.That rod hangs from a pole and is free to swing from side to side when there`s an earthquake. #5:the last way to be safe is by having hard material furniture An earthquake that occurs under the ocean causes sudden movement of the seafloor.This movement causes powerful ocean waves that can devaste a region.these ocean waves are called tsunamis, one of an earthquake hazards.You know when one is about to occur when the water along the shoreline might move back rapidly toward the sea. Those lines on the paper role are called a seismogram Wet sediment can be strong but an earthquakes shaking can can cause it to act like liquid.This is called liquefaction.When liquefaction occurs in soil under buildings the buildings can sink into the soil and collapse.People that living in earthquake-regions should avoid building on soil or fill made of loose sediment. P-waves acuse rock particles to vibrate in the same direction that waves travel.There the first to be detcted and recorded by scientific instruments are the fastest,and travel through both solids and fluids. S-waves cause rock particles to vibrate perpendicualr to the direction direction that waves travel.There slower than p-waves and are recorded to come after p-waves.They only travel through solids. Surface-waves cause rock particles to move with a side to side swing or rolling motion.Is the slowest seismic wave and causes the most damage at earths surface #6:last one is to have batteries,flashlight,first aid kit,battery radio,gallons of water,and canned food. seismographs One way to

Earthquake Powerpoint Template

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