Earthquakes generate seismic waves, which can be detected with a sensitive instrument called a seismograph. With the advances in seismograph technology it has helped us understand earthquakes and Earth itself. (A man named Choko invented the earliest seismograph in China in 136 A.D.) Earthquakes generate seismic waves, which can be detected with a sensitive as we have progressed thought the centuries we have developed improvements in technology, lives have been saved and many more will. All that remains is to research what takes place before, during, and after an eart

This is the most common kind of motion along the mid-ocean ridges. This is a system of undersea mountain ranges that extends beneath the world's oceans and connects together like the seams on a baseball.

Earthquake Design Benjamin Mullah Geology is the study of the earth's landmasses. The earth is constantly changing. These changes are to slow for one person to see in his or her lifetime. Forces cause different things to happen on the surface of the earth. Such as mountains growing and eroding. The earth is broken down into layers lithosphere, hydrosphere, and atmosphere. The lithosphere is the dense, solid layer that surrounds they earth. Which we call the ground. Scientists believe that the earth was formed by very dense elements such as iron and nickel.

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