Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden...

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BY KELSEY AND EBONY… HOPE YOU ENJOY!! EARTHQUAKES!!!! By Kelsey Middleton

Transcript of Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden...

Page 1: Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make.

BY KELSEY AND EBONY…HOPE YOU ENJOY!!

EARTHQUAKES!!!!

By Kelsey Middleton

Page 2: Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make.

Contents

What is an earthquake? A video of a earthquake. Where do earthquakes most

commonly happen. What are selsmometers?

Page 3: Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make.

What is an Earthquake?

Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little. They don't just slide smoothly; the rocks catch on each other. The rocks are still pushing against each other, but not moving.

Page 4: Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make.

A video of a Earthquake!!!

http://video.nationalgeographic.co.uk/video/environment/environment-natural-disasters/earthquakes/inside-earthquake/
Page 5: Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make.

Where do earthquakes most commonoly happen?

Earthquakes occur most where there are faults and at places that are close to active volcanoes. These areas experience earthquakes because they are characterized by tension in the earth that is released from rocks in the earth crust and upper mantle as a result of friction between the plates. Earthquakes have been recorded in Chile, China, Japan, and Portugal.

Page 6: Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make.

What are seismometers?

Seismometers are instruments that measure motions of the ground, including those of seismic waves generated by earthquakes, volcanic eruptions, and other seismic sources. Records of seismic waves allow seismologists to map the interior of the Earth, and locate and measure the size of these different sources.

The word derives from the Greek, a shaking or quake, from the verb to shake; and measure and was coined by david Milne-Homelien 1841, to describe an instrument designed by Scottish physicist James David Forbes

http://en.wikipedia.org/wiki/Seismic_wave
http://en.wikipedia.org/wiki/Earthquake
http://en.wikipedia.org/wiki/Volcanic_eruptions
http://en.wikipedia.org/wiki/Seismic_source
http://en.wikipedia.org/wiki/Seismology
http://en.wikipedia.org/wiki/Greek_language
http://en.wikipedia.org/wiki/David_Milne-Home
http://en.wikipedia.org/wiki/James_David_Forbes
Page 7: Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make.

Hope you enjoyedxxx


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