GEOLOGY

Detailed explanation-1: -Answer: C) plate movement at fault lines. Explanation: Earthquakes are vibrations that develop when there is a build-up of stress in the Earth’s crust resulting in plate movement at fault lines.

Detailed explanation-2: -Earthquakes are vibrations of the Earth produced by the release of energy during a sudden rupture of the Earth. a. Primary waves (or P waves) are compressional waves that vibrate in the direction of propagation; think of “push” waves. These waves move sort of like a wave moving along a slinky.

Detailed explanation-3: -An earthquake is what happens when two blocks of the earth suddenly slip past one another. The surface where they slip is called the fault or fault plane.

Detailed explanation-4: -What Causes an Earthquake? Earthquakes are caused due to sudden tectonic movements in the earth’s crust. When the tectonic plates slide over one another, there is a cause of orogeny which results in earthquakes and volcanoes. These disturbances cause vibrations that spread in all directions.

Detailed explanation-5: -The two general types of vibrations produced by earthquakes are surface waves, which travel along the Earth’s surface, and body waves, which travel through the Earth. Surface waves usually have the strongest vibrations and probably cause most of the damage done by earthquakes.