Search the internet to determine why earthquakes occur. In the comment box below, use your own words to describe what happens, and be sure to cite the website that you are using. DO NOT COPY AND PASTE your answer.
 


Comments

Cameron Dutton
01/23/2013 6:03am

When rock suddenly breaks underground along a fault.There is a sudden release of energy that makes seismic waves that shake the ground.

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Cameron dutton
01/23/2013 6:05am

www.geo.mtu.edu/UPSeis/why.html

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$Parks Hagan$
01/24/2013 8:12am

I agree because the rock does break along a fault,and then it does release seismic waves causing an earthquake.

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Trey May
01/24/2013 8:12am

I agree because the rocks on the fault line do break apart.Then it releases energy.

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jeffrey young
01/24/2013 11:50am

i agree because siesmic waves do cause earthquakes

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Logan Williams
01/24/2013 1:53pm

I agree the earthquakes have seismic waves.

Connor O'Sullivan
01/24/2013 2:10pm

I agree, thats very similar to what I put, but you managed to make your explaination a lot more simple than mine. Good job.

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Wes Purcelll
01/24/2013 5:54pm

I agree totally. You might want to write more facts though. Kinda short.

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Rebekah Cousson
01/23/2013 6:06am

When the rocks underground slip causing the earth to shake.

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Megan Kinsey
01/24/2013 6:07am

It is actually sudden movement in the Earths crust. They occur near plate boundaries. They either converge (collide), diverge (move away from each other), or shear (grind past each other). Moving magma such as volcanoes can cause earthquakes too. In a way they do "slip", but you have to be more specific with what you mean by slip. because there is a couple different way an earthquake is caused. Energy is also released in the form of waves causing the earth to move rapidly.

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EA Waters
01/24/2013 6:14am

I disagree because that is not all that happens when a earthquake occurs. The plates have to colide why passing by eachother.It also has to happen along the plate boundaries.

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01/23/2013 6:06am

Earthquakes are generally a movement under earth's crust that we can experience in the form of seismic waves. As the crust floats on top of the asthenosphere in sections called plates, they often interact with each other and release an immense amount of energy in the form of seismic waves. These can range from small earthquakes (that we can't even feel) and very catastrophic ones that can, in fact, destroy cities and towns.

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Katie Bell
01/24/2013 6:04am

I also agree that earthquakes can range in seismic activity. We sometimes don't even feel the seismic waves,but at other times, they cause catastrophic damage.

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Rebekah Cousson
01/24/2013 6:06am

I agree, earthquakes are causes by seismic waves under the surface causing the earth to shake; good job.

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Zac Kumpula
01/24/2013 6:08am

I absolutely agree in what you have said. There are many towns that don't even know that they ave had an eartquake because the seismic waves are sometimes so small.

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Jake Woolard
01/24/2013 6:10am

I agreewith Zac. It is amazing how much the earthquales can range in seismic activity.Some you can't feel,but others are devastating. I wonder how scientists can predict ,sometimes, how big the earhtquake can be.

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Grainger Ballard
01/24/2013 6:55am

I agree with Zach. Earthquakes are caused plate interactions and seismic waves.

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Natalie Mincey
01/24/2013 2:03pm

I agree with Zach, earthquakes can range in seismic activity. Some seismic waves you can't even feel, but others can be very devastating.

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Zac Kumpula
01/23/2013 6:08am

Earthquakes are usually caused by rocks moving together or apart along a fault.It then releases a seismic wave where it causes the ground to shake. http://www.geo.mtu.edu/UPSeis/why.html

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Quincy Tanner
01/24/2013 6:44am

I agree that earthquakes are caused by rocks and move apart or together and realeases a seismic wave to make earthquake.

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01/23/2013 6:09am

Earthquakes occur when the fault line undergoes preassure and sudenly breaks. Causing seismic waves wich causes the ground to move.

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cameron dutton
01/24/2013 5:47am

I agree, earthquakes do form when fault lines undergo pressure and suddenly breaks. I also agree that seismic waves cause the ground to move.

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01/23/2013 6:09am

Earthquakes are usually caused when rock underground suddenly breaks along a fault. The sudden release of energy causes seismic waves to make the ground shake! When the the plates rub against eachother the don't slide smoothly.

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Aubrey Ray
01/24/2013 6:14am

I agree with Maggie because the sudden release of energy does cause a seismic wave to make the ground shake and the plates do rub against each other and don't slide smoothly.

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Abigail Bland
01/24/2013 7:11pm

I agree with you Maggie! The rock that are breaking along the fault are releasing energy that cause seismic waves that causes the ground to shake.

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01/23/2013 6:10am

The plates in the Earth's crust move suddenly and either collided,diverged, or slide past one another causing the ground to shake along the boundaries which is what we know as a earthquake.

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Trent Kennedy
01/24/2013 6:14am

I agree, the plates do collide ,diverge,or slide past each other causinfg the ground to shake.

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sam glisson
01/24/2013 6:11pm

I agree completely

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01/23/2013 6:10am

An earthquake is a movement under earth's crust that involves seismic waves that radiate up from the ground causing the earth's surface to shake. They can last a few secounds or continue for several minutes.

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Taylor Sapp(:
01/24/2013 5:58pm

I agree with Courtney that an earthquake is a movement under the earths crust that involves seismic waves.

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01/23/2013 6:10am

An earthquake occurs when one block slips and move relative to the other. The energy released causes vibrations called seismic waves, that causes the ground to shake.

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Lauren Potts
01/24/2013 12:10pm

I agree Emma. That is exactly how an earthquake happens!

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Isabella Williams!!!!!(:
01/24/2013 12:12pm

I agree with you Emma. That is how an earthquake happens. The seismic wave does shake the ground.

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01/23/2013 6:11am

When rock underground break on a fault, earthquakes usually occur. When two blocks of rock or two plates rub against each other they don't slide smoothly. Suddenly the tension causes rocks underground to break and the earthquake occurs.

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Graham Tanner
01/24/2013 6:11am

I also agree that when the rocks underground break along a fault, earthquakes usually occur. When the tension builds up it it causes them to break and make an earthquake.

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Courtney Kirkland
01/24/2013 6:15am

I agree, Aubrey Ray. That when the rocks underground break on a fault, most likely an earthquake will occur. Also, I agree an earthquake is when two blocks of rocks or two plates rub against eachother ,and they do not slide smoothly. I agree that the tension causes rocks to break underground causing the earthquake to occur. This was a good comment. I agree with everything (:

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Maggie Greer
01/24/2013 6:17am

I agree, with Aubrey Ray because when the 2 plates slide they do NOT slide smoothly. You are totally right!

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Emily Threlkeld
01/24/2013 12:15pm

I agree with Aubrey. She explained correctly why earthquakes occur. She gave a descriptive explanation.

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Rachel Jarriel
01/24/2013 2:29pm

I agree with aubrey ray they do not slide smoothly.They slide roughly by each other which causes tension then they break making a earthquake.

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Megan Kinsey
01/23/2013 6:11am

Why do earthquakes occur? Well, they occur during sudden movement in the Earths surface. Also when the plates interact with each other. A big amount of energy is released in the form of waves. Causing the Earths plates to shift. they either converge (collide), diverge (move away from one another), or shear (grind past one another) That is why earthquakes occur.

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Charla Durrence
01/24/2013 7:12am

What you put about why earthquakes occur helped me understand better. I now know why earthquakes occur. The quick movement pushes the other plates called plate tectonics. This is why we feel the "shaking" known as an earthquake.

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01/23/2013 6:12am

Earthquakes occur when rocks underground break along a fault. The sudden release of energy causes a seismic wave that shakes the ground.

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Wes Purcell
01/23/2013 6:58am

When plates collide the force builds up over time causing earthquakes. Seismic waves are sent out causing damage. They occur along fault lines.

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Elizabeth Porter
01/23/2013 6:48am

Earthquakes are usually caused by ground shaking caused by sudden movement in the Earth's crust.

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Miranda DeLoach
01/23/2013 6:48am

Earthquakes occur when the plates(which float on the athenosphere)interract with eachother. Most earthquakes are caused by plates that slide past eachother, subduct, or collide into each and don't subduct, just continue to push. The release of energy from this is called seismic energy, and we feel it as earthquakes. Seismic energy causes listing, swaying, and the destruction off buildings and street, or moves rivers, or makes mountains!

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Natalie Mincey
01/23/2013 6:49am

Earthquakes usually occur when underground rocks break. The sudden energy released causes seismic waves to shake the ground.

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Robin Salter
01/24/2013 4:49pm

I agree with Natalie, earthquakes can occur when underground rocks break.

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jobie
01/23/2013 6:50am

when tension builds up in the ground and releses it causes the earth to shake . when tectonic plates slide past eachother it will cause a strike slipe fault and earthquake

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Jobie
01/24/2013 6:54am

wikapedea- the plates converg can cause an erthquake

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Ridge Bradley
01/24/2013 5:30pm

Everything was good except the sudden release of energy causes seismic waves that make the ground shake.

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Emily Threlkeld
01/23/2013 6:54am

I found the information at http://earth.rice.edu/mtpe/geo/geosphere/hot/3earthquakes.html
Earthquakes occur because plates on the earth's crust move. When they collide they create energy and shock waves that move throughout the earth.

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Lane Da$her
01/24/2013 6:19am

Ok, Emily, I kinda agree but earthquakes occur because the plates slide past each other and they catch on other rocks causing it to get stuck and pressure builds up and then suddenly brakes causing earthquakes.

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Grainger Ballard
01/23/2013 6:55am

Eathquakes occur when plates: collide, slide past each other, subduct, move together, or move apart. This causes the ground to break and shake due to seismic waves.

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Zach Anderson
01/24/2013 6:08am

I agree, the following actions of earth's crust plays a heavy role in earthquakes.

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Grainger Ballard
01/24/2013 6:54am

I used www.google.com

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Miranda DeLoach
01/24/2013 7:03am

When plates subduct, really, it's still just the same as colliding but one sinks, and one doesn't... Subducting makes volcanoes, but when they don't subduct they cause mountains.

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Lauren Potts
01/23/2013 6:59am

When a plate slips and moves along a fault, seismic waves occur and they cause the ground to shake. www.fema.gov/earthquake/why-earthquakes-occur

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Emma Dasher
01/24/2013 6:15am

I agree, Lauren. When the plates slip and move along the fault,and a seismic wave comes, it could be veerrry bad. It would cause the ground to shake very bad. I hope an earthquake never happens to us! There would be no more monsters for you to drink, till along time! lol.

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sam glisson
01/23/2013 7:02am

an earth quake occure when plates collide slide past each other thus making a earth quake

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01/24/2013 7:01am

this is the the site i used

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Laquisha- KAITLIN
01/23/2013 8:39am

I discovered they occur because rock underground suddenly breaks along a fault.

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Alyssa Brannen :D
01/23/2013 8:41am

Plates Shift And Collide With Each Other. Causing Energy To Be Forced Up.
http://earth.rice.edu/mtpe/geo/geosphere/hot/3earthquakes.html

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01/23/2013 8:41am

I discovered that an earthquake happens when rock suddenly breaks underground. That point is called the focus of the quake and is where the earthquake starts.

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01/24/2013 5:52am

Earthquakes occur when the pressure becomes stronger and the force that is holding them together starts too slip and it forms an earthquake

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01/24/2013 5:53am

Earthquakes are usually caused when rock breaks along a fault.The plates collide and cause the ground to shake. After the earthquake is over the plates start moving away from each other.

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01/24/2013 5:53am

Earthquakes occur when rocks underground break along a fault.Two plates are moving beside each other and rock catches and it stops moving. Pressure builds up and then it brakes causing a earthquake. The place where the rocks brake is called the focus and the place above the focus is called the epicenter.

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01/24/2013 5:59am

Earthquakes are caused when rocks under the ground sudenly break along the fauly line suddenly releasing energy causeing seismic waves that make the ground shake. Then two rocks push against each other but they are still stuck together. After a while, the rocks break beacause of all the presure that has built up. When the rocks break, the earthquake occurs.

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Christian Strickland
01/24/2013 6:02am

Earthquakes occur when underground rock breaks along a fault.The release of energy causes a seismic wave which makes the ground shake.When the rocks are moving agianst each other they stick a little they dont just slide smoothly.After a while the rocks break from all the pressure that is built up.When the rocks break an earthquake occurs.I got my imformation from google.

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Matthew Floyd
01/24/2013 6:11am

I Agree earthquakes are when underground rocks break along a fault line and they do stick to each other and dont move smoothly,

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Matthew McGlashan
01/24/2013 5:05pm

I agree that earthquakes break along a fault line and that they stick when they slide.

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Quincy Tanner
01/24/2013 6:13am

The reason why earthquakes occur is because plates slide past each other on a fault.The plates push against each other building pressure and makes the earthquake.

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01/24/2013 6:14am

Earthquakes occur when plate tectonics have pressure applied to them. They float on top of the mantle and when they collide, they send out seismic waves, creating earthquakes.

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01/24/2013 6:19am

Earthquakes occur due to stress in the earths crust that results in boundaries called faults. But faults can't hold forever,so the plates pull apart, or slide causing earthquakes.

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IsabellaWilliams
01/24/2013 6:41am

Earthquakes occur when rocks break underground along a fault. There is a sudden realease of energy causes seismic waves that make the ground shake.

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01/24/2013 6:48am

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Matt Griner
01/24/2013 6:46am

Earthquakes are caused when a rock brekks on a fault underground. The release of energy makes the seismic waves, which makes the ground shake.

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Kaleb Shuman
01/24/2013 6:47am

A earthquake is ground shaking caused by the movment of plates then energy is rleased and that causes a sesmic wave and that is makes the ground shake and this happens all alongside a fault.

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kaleb shuman
01/24/2013 6:50am

i found this information at http://www.fema.gov/earthquake/why-earthquakes-occur

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01/24/2013 6:48am

Earthquakes are the sudden movement of earth's crust. Below the crust is the asthenosphere, the upper part of the mantle that is composed of liquid rock. Plates float on top of this layer and can be forced to move around. When they shift they will collide and slid past each other causeing the wave of an earthquake. Even though an earthquake can happen anywhere at any time it mostly happens at plate boundaries. Another way a earthquake could happen is by volcanoes. The movement of rock and magma is a way it is caused. The energy is meassured by the "magnitude" of the earthquake.

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Taylor Sapp(:
01/24/2013 6:51am

Earthquakes are movements of the earth's crust. The plates of the earth's crust float on top of the asthenosphere ,and can be forced to move as the molten material below moves. As the plates shift an amount of energy is released making it in the form of waves. They can occur anywhere with no warning ,but the worst earthquakes occur near plate boundaries. Moving rock and magma from volcanoes can also make earthquakes.

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01/24/2013 6:51am

An earthquake is a ground shaking caused by a sudden movement in the earths crust.Such movements occour along faults.The energy released is called siesmic waves.Siesmic waves forces the energy up to the earths crust which causes the ground to shake.

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01/24/2013 6:52am

A earthquake is ground shaking caused by a sudden movement in the rock on the Earth's crust.This movement occurs along the fault ,which are zoness of crushed rocks that seperate the block or crust. Then the rocks build up pressure and slip into one another along the fault, the energy creates vibrations called seismic waves.

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Madolyn Hendrix
01/24/2013 4:45pm

I agree with Abigail. It is a good definition and explains how one occurs.

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Matt Griner
01/24/2013 6:53am

I found this information at www.geo.mtu.edu/UPSeis/why.html

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01/24/2013 6:56am

Earthquakes may last only a few seconds or may continue for several minutes. They can occur at any time of day or at night and any time of the year. They are caused by stress that builds up in blocks.

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01/24/2013 7:02am






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01/24/2013 7:06am

Earthquakes occur when rock underground suddenly break along a fault. The sudden release of energy causes the seismic wave that makes the groung shake. The spot underground where the rocks break is called the focus of an eathquake, and the place right above the focus is called the epicenter of the earthquake.

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Ashton Gambino
01/24/2013 7:48am

I learned that movements occur along faults. When one block suddenly slips and moves relative to the other along a fault, the energy released creates vibrations called seismic waves that radiate up through the crust to the Earth’s surface, causing the ground to shake

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Alyssa Brannen :D
01/24/2013 8:07am

I Agree. But It Is Also It Is A Force Under The Ground... Bye Now :D

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Trey May
01/24/2013 7:48am

Earthguakes are caused when rocks break along a fault.Then there is a release of energy and the ground shakes.When the rocks break the earthquake occurs.

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Parks Hagan.
01/24/2013 7:50am

Earthquakes occur when rock underground suddenly breaks along a fault.This sudden release of energy causes seismic waves that makes the ground shake.When 2 plates rub agains each other;they dont just slide smoothly.The rocks catch on each other.after awhile the pressure builds up,and then releases the energy causing an earthquake.

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Kaitlin Durrence
01/24/2013 7:51am

Why do Earthquakes occur? I learned that Earthquaks usually occur when rock underground breaks along a fault. The sudden engergy causes the seismic waves to shake.

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RayeAnna Strickland
01/24/2013 7:57am

Earthquakes are usually caused when rock underground suddenly breaks along a fault.The spot underground where rock breaks is called the focus of an earthquake,and the place right above it is called the epicenter.Earthquakes can be underground explosions like sound waves.The explosions may be set off to break rock while making tunnels for roads,railroads,subways,or mines.

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Lauren McNure
01/24/2013 1:59pm

I completely agree, but the waves that we feel are called seismic waves. Other than that I think that yor definition is pretty good.(:

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01/24/2013 7:57am

Earthquakes occur along on the falt.The vibrations from the earthquake crack the thin layer of rock on the falt.The biggest part of the earthquake is the stress built up and makes the vibrations which causes the earthquakes to occur.

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01/24/2013 7:58am

I learned that earthquakes occur as movement takes place within the Earth's plates. When the plates move we feel the energy in the form of seismic waves.

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Allison Harvey
01/24/2013 2:25pm

I completely agree with this comment. All the facts were accurate. Over all i think it is a great definition.:):):)

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01/24/2013 7:58am

I searched the question, and came across a website that gave a direct answer in detail. What the website said was earthquakes usually form when underground rocks break along a fault. The seismic waves cause the ground to shake. When two plates collide, they continuously push against each other. They push so hard until they break apart, causing an earthquake.

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01/24/2013 7:58am

I learned that earthquakes occur when there is movement in the earth's plates. When the plates move/bump into eachother, they release the energy in the form of seismic waves which we feel as an earthquake.

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---->Haley Bowen<----
01/24/2013 2:31pm

I agree with you on that one! that is a great way to explain how an earthquake works.

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levi blizzard
01/24/2013 7:59am

I learned earthquakes are usually caused when rocks underground suddenly break along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rocks or two plates are rubbing against each other,they stick a little, also when rocks recieve pressur they sometimes break

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~*Courtney Coley*~
01/24/2013 8:00am

Why do earthquakes occur? The occur when one plate suddenly slips and and collide into another one and makes an energy that releases vibrations that are called seismic that radiates up through the crust and it causes the ground to shake.
http://www.fema.gov/earthquake/why-earthquakes-occur

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Matthew McGlashan
01/24/2013 8:00am

Earthquakes occur when the under ground movement of tectonic plates break and move under pressure. The rocks do NOT slide smoothly ;they will catch and move roughly together. The plates will countinue to slide untill they get stuck. Where the plates broke apart is called the focus. The plate right above it is called the epicenter. Earthquakes can cause explosions that forms roads, railroads, subways, or mines. The explosions are not very strong sometimes you can NOT feel them.

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Nicholas Hart
01/24/2013 8:02am

An earthquake normally occurs a long a fault, but can occur anywhere. The cause of an earthquake to happen is when a rock breaks or cracks. It quickly releases energy, causing a seismic wave to shake the earth. When the two different parts of the rock or plates start to move, they will catch on the uneven parts of the break (sides could look like this:~) it is ot even. This makes the ground shake because it is not moving smoothy (like these sides:- it is straight). If fault were like this, there would be no earthquake. Because the sides would move evenly not rubbing together unevenly. this is amazing how an earthquake works! That is how an earthquake works.

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01/24/2013 8:07am

Earthquakes occur when a peice of Earth's crust moves. This movement occurs along faults which are thin zones of crushed rocks separating Earth's crust. Blocks of Earth's crust move,this movement causes enregy to build up once released this energy causes seismic waves to shake the ground. Earthquakes may last a few seconds up to a few minutes. They arecaused by pressure builds up over time in Earth's crust. They can come at any timeof the year, also can come at night or in the middleof the day.

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01/24/2013 8:08am

Most earthquakes are formed when rocks under the surface of the earth break apart. When the rocks just all of a sudden brake apart it lets out a burst of energy which would be seismic waves and it cause the earth to shake.....When two plates are moving they could get stuck because the plates do not move smothly because they get caught up on other rocks. When the rocks are stuck on each other they just push each other (which isn't very nice) ,but they do not move away from each other. After a while though, the rocks finally break apart because all the pressure that is being put on them. As the rocks break it causes a earthquake! While the earthquake is happenig teh rocks begin to move again and get stuck forming the "focus" of the earthquake.

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Madeline Thompson:)
01/24/2013 8:13am

I used www.google.com. I just forgot to put that yesterday.

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Sara Durrence
01/24/2013 8:14am

The earthquakes usually occur beacause the rock underground breaks, and it releases the energy causing the seismic waves to make the ground shake.

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01/24/2013 1:41pm

Earthquakes usually form because underground rocks break at a fault .When this happens it realeses energy,this energy is called a siesmic wave. The seismic waves shake,break,or do both to the ground. Sometimes the ground can shake violently or it can shake slightly.

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Rachel Jarriel
01/24/2013 2:20pm

Earthquakes occur when two plates collide or break apart the burst of energy causes a seismic wave which makes the earth to shake.www.earthquakes.com

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dake
01/24/2013 3:38pm

i agree this is the exact reasons for earthquakes

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x-wing @alicousness (dake)
01/24/2013 3:37pm

A fault occurs when plates slide past, collide,and pull apart.These movements then cause seismic waves of all magnitudes causing a complete disaster.

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Matt GRiner
01/24/2013 5:50pm

I agree with you, x-wing. Because that comment is true.

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01/24/2013 6:37pm

An earthquake is experienced durring the sudden movement of the Earth's crust. the Earth's crust is made of multiple sections, broken up into plates. These plates float on-top of the asthenosphere which is the highly ferocious, weak, and deforming region of the Earth's upper mantle and it comes from a Greek word asthenes (weak + sphere). Interesting, right? Anyways, with the plates floating on the asthenospere, sometimes they shift as the magma below it moves, and as the plates move, a gargantuan sum of energy is released in the form of waves, seismic waves. We feel this release and know it as an earthquake,seism or a temblor.

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