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.
Cameron Dutton
1/23/2013 07:03:52

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
1/23/2013 07:05:32

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

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$Parks Hagan$
1/24/2013 09:12:24

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
1/24/2013 09:12:59

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

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jeffrey young
1/24/2013 12:50:49

i agree because siesmic waves do cause earthquakes

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Logan Williams
1/24/2013 14:53:34

I agree the earthquakes have seismic waves.

Connor O'Sullivan
1/24/2013 15:10:48

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
1/24/2013 18:54:35

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

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Rebekah Cousson
1/23/2013 07:06:23

When the rocks underground slip causing the earth to shake.

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Megan Kinsey
1/24/2013 07:07:25

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
1/24/2013 07:14:55

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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1/23/2013 07:06:52

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
1/24/2013 07:04:28

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
1/24/2013 07:06:32

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

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Zac Kumpula
1/24/2013 07:08:44

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
1/24/2013 07:10:48

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
1/24/2013 07:55:22

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

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Natalie Mincey
1/24/2013 15:03:25

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
1/23/2013 07:08:57

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
1/24/2013 07:44:11

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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1/23/2013 07:09:29

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
1/24/2013 06:47:01

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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1/23/2013 07:09:45

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
1/24/2013 07:14:02

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
1/24/2013 20:11:53

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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1/23/2013 07:10:08

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
1/24/2013 07:14:36

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

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sam glisson
1/24/2013 19:11:44

I agree completely

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1/23/2013 07:10:37

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(:
1/24/2013 18:58:59

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

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1/23/2013 07:10:49

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
1/24/2013 13:10:11

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

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Isabella Williams!!!!!(:
1/24/2013 13:12:48

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

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1/23/2013 07:11:16

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
1/24/2013 07:11:30

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
1/24/2013 07:15:24

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
1/24/2013 07:17:19

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
1/24/2013 13:15:50

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

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Rachel Jarriel
1/24/2013 15:29:41

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
1/23/2013 07:11:31

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
1/24/2013 08:12:23

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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1/23/2013 07:12:05

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
1/23/2013 07:58:08

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
1/23/2013 07:48:09

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

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Miranda DeLoach
1/23/2013 07:48:47

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
1/23/2013 07:49:46

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

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Robin Salter
1/24/2013 17:49:47

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

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jobie
1/23/2013 07:50:47

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
1/24/2013 07:54:24

wikapedea- the plates converg can cause an erthquake

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Ridge Bradley
1/24/2013 18:30:23

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

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Emily Threlkeld
1/23/2013 07:54:31

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
1/24/2013 07:19:06

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
1/23/2013 07:55:22

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
1/24/2013 07:08:19

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

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Grainger Ballard
1/24/2013 07:54:03

I used www.google.com

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Miranda DeLoach
1/24/2013 08:03:01

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
1/23/2013 07:59:20

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
1/24/2013 07:15:56

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
1/23/2013 08:02:27

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

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1/24/2013 08:01:53

this is the the site i used

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Laquisha- KAITLIN
1/23/2013 09:39:31

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

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Alyssa Brannen :D
1/23/2013 09:41:03

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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1/23/2013 09:41:30

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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1/24/2013 06:52:39

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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1/24/2013 06:53:10

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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1/24/2013 06:53:54

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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1/24/2013 06:59:30

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
1/24/2013 07:02:29

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
1/24/2013 07:11:10

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
1/24/2013 18:05:15

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

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Quincy Tanner
1/24/2013 07:13:09

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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1/24/2013 07:14:47

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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1/24/2013 07:19:51

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
1/24/2013 07:41:50

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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1/24/2013 07:48:33

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Matt Griner
1/24/2013 07:46:14

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
1/24/2013 07:47:13

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
1/24/2013 07:50:44

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

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1/24/2013 07:48:02

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(:
1/24/2013 07:51:08

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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1/24/2013 07:51:22

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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1/24/2013 07:52:10

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
1/24/2013 17:45:29

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

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Matt Griner
1/24/2013 07:53:07

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

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1/24/2013 07:56:09

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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1/24/2013 08:02:01






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1/24/2013 08:06:59

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
1/24/2013 08:48:18

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
1/24/2013 09:07:02

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

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Trey May
1/24/2013 08:48:27

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.
1/24/2013 08:50:39

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
1/24/2013 08:51:02

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
1/24/2013 08:57:01

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
1/24/2013 14:59:58

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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1/24/2013 08:57:22

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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1/24/2013 08:58:02

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
1/24/2013 15:25:40

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

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1/24/2013 08:58:28

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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1/24/2013 08:58:36

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<----
1/24/2013 15:31:47

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

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levi blizzard
1/24/2013 08:59:50

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*~
1/24/2013 09:00:44

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
1/24/2013 09:00:51

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
1/24/2013 09:02:38

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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1/24/2013 09:07:51

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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1/24/2013 09:08:19

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:)
1/24/2013 09:13:54

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

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Sara Durrence
1/24/2013 09:14:54

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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1/24/2013 14:41:43

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
1/24/2013 15:20:51

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
1/24/2013 16:38:53

i agree this is the exact reasons for earthquakes

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x-wing @alicousness (dake)
1/24/2013 16:37:44

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
1/24/2013 18:50:19

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

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1/24/2013 19:37:42

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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