Give instructions.
Epicenter: The point at the surface of the Earth above the focus.
The surface waves (Love and Rayleigh waves) are the other, often larger, waves marked on the seismogram. Actually earthquakes occur daily around the world (according to one estimate, about 8000 occur every year), but most of them are too mild to be noticeable. Elaborate: To conclude the worksheet, direct students to summarize what they learned about important considerations and how to design buildings in earthquake-prone areas: Thinking as engineers, draw a sketch of a building that could withstand a strong earthquake and explain your key design features. You could also put tectonic plates in the picture below the Earth's crust. What is an earthquake? Let’s take a look at all you need to know about earthquakes and fill your brain with knowledge! b. a.
Seismic waves: Waves that transmit the energy released by an earthquake.
2) You could draw an example of a seismogram made by a seismograph. Introduction The most direct description of an earthquake motion in time domain is provided by accelerograms that are recorded by instruments called Strong Motion Accelerographs. If the epicenter of the earthquake is 215 kilometers away, that equals 2.15 centimeters on the map. Earthquakes: Definition, Causes, Measures and Other Details (With diagram)! 3. 1) You could draw a fault and then locate the focus and epicenter at the fault. They have a lower frequency, which means that waves (the lines; the ups-and-downs) are more spread out.Surface waves travel a little slower than S waves (which, in turn, are slower than P waves) so they tend to arrive at the seismograph just after the S waves. 2 some earthquakes have occurred on a world map to see if there are any connections between them. The accelerograph records three orthogonal components of ground acceleration There are about 500 of these around the globe every year. Developed for the ShakeOut by the Southern California Earthquake Center (www.scec.org). Learn how to prepare for emergencies, make plans, see examples. Use one of your colored pencils/crayons to draw a point where each earthquake took place. Distribute the materials to students. Using your compass, draw a circle with a radius equal to the number you came up with in Step #2 (the radius is the distance from the center of a circle to its edge). Plates: Massive rocks that make up the outer layer of the Earth’s surface and whose movement along faults triggers earthquakes.
Lecture 18: Earthquake-Response Spectra Reading materials: Sections 6.4, and 6.5 1.
Few engineering projects have the scope, costs or risks involved in building a new bridge. Earthquake Facts. Earthquakes can sometimes be really scary things, but they are very interesting in how they form and why they do.
Fault: A fracture in the rocks that make up the Earth’s crust. Then, you could draw lines indicating the S waves, P waves, Raleigh waves, or Love waves. The sudden shaking or rolling of the earth’s surface is called an earthquake. Earthquakes are a … An evacuation plan is a diagram showing the safest emergency exit routes from a home or building.
A moderate earthquake registers between 5 and 5.9 on the Richter scale and causes slight damage to buildings and other structures.