1 / 7

Chapter 9 Earthquakes

Chapter 9 Earthquakes. Forces inside Earth. Elastic Limit – point at which rocks will remain bent or break, due to applied stresses. Faults – surfaces along which rocks break and move in different directions relative to the fault surface.

karma
Download Presentation

Chapter 9 Earthquakes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 9Earthquakes

  2. Forces inside Earth • Elastic Limit – point at which rocks will remain bent or break, due to applied stresses. • Faults – surfaces along which rocks break and move in different directions relative to the fault surface. • Earthquake– the movement of the ground, caused by waves from energy released as rocks move along faults.

  3. Types of Faults

  4. Earthquake Information • Focus – the point in Earth’s interior where earthquake energy is released. • Epicenter – the point on Earth’s surface directly above an earthquake’s focus.

  5. Seismic Waves • These are the waves of energy that move outward from the earthquake’s focus and make the ground shake • Primary Waves – travel through the Earth by causing particles in rocks to compress and stretch apart (back and forth) in the direction of the wave. FASTEST WAVES • Secondary Waves - travel through the Earth by causing particles in rocks to move at right angles to the direction of the wave.

  6. Primary Waves – travel through the Earth by causing particles in rocks to compress and stretch apart (back and forth) in the direction of the wave. (FASTEST WAVES) • Secondary Waves - travel through the Earth by causing particles in rocks to move at right angles to the direction of the wave.

  7. Surface Waves • These waves are emitted from the epicenter of an earthquake. Give particles an elliptical and back/forth motion. • These cause buildings to collapse. These waves cause the most destruction. (SLOWEST WAVES)

More Related