Earthquakes+2

Standard: 1. Plate tectonics accounts for important features of Earth’s surface and major geologic events. As a basis for understanding this concept: a. Students know evidence of plate tectonics is derived from the fit of the continents; the location of earthquakes, volcanoes, and midocean ridges; and the distribution of fossils, rock types, and ancient climatic zones. d. Students know that earthquakes are sudden motions along breaks in the crust called faults and that volcanoes and fissures are locations where magma reaches the surface. e. Students know major geologic events, such as earthquakes, volcanic eruptions, and mountain building, result from plate motions. f. Students know how to explain major features of California geology (including mountains, faults, volcanoes) in terms of plate tectonics. g. Students know how to determine the epicenter of an earthquake and know that the effects of an earthquake on any region vary, depending on the size of the earthquake, the distance of the region from the epicenter, the local geology, and the type of construction in the
 * Plate Tectonics and Earth’s Structure**

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Introduction
Today were going to talk about Erthquakes and i hope you have fun reading this science project. We are going to tell you information about diffrent Seisimc Waves. Also we are going to talk about epicenter and also about focus.We are going to talk about Mesuring erthquakes Recording Seismic waves and finally abouttypesof faults. Vocabulary

Content (re-name this heading to describe your topic) Seisimc waves are called the motion that is felt as erthquake.Also there are body waves are to kinds of waves p-waves and s-waves. P-waves are primary waves and is an example of longitudinal.Epicenter is where the quake is most stronglyfocus is the point underground where the erthquakes begain.The epicenter scientist analyze data from seismographs. P-waves are the first to aririve atb surfce .They are longitudinal waves.S-wavescome next they are transversewaves.L-waves are a type of surface waves these are type of wavesthese are typically very destructive.

=Measuring Earthequake= Some earthquakes relese a hug amount of energy and some of them relese very little.Intensity is a mesure of the amount of damage the quake produses. Also intensity depend on observation of earthequake effects. Magnitude is the amount of energy that an earthequake relases.

=Recording Seismic Waves= Scientist can quickly locate where the earthequake are .Seismograph are the main tool for measuring the strength and duration of an earthquake.also seismograph detects and measures the amount of ground motion during a quake. There is one type of seismograph measures horizantol motion. Scientis say that the data to measure the strength of an erthquake.

=Tyepes of Fault= There are many types of faults there are normal faults, Reverse faults and Strike- slip faults. Normal Faults are sections of the crustthat move apart rocksstreched ut Conclusion