1 / 7

Earthquake Introduction Notes

Earthquake Introduction Notes. Causes of Earthquakes. As the crust tries to move, pressure builds When crust finally moves, pressure and energy is released. Released as Seismic Waves. Different Sized Earthquakes. Bigger quakes release more pressure Smaller quakes release less pressure

foster
Download Presentation

Earthquake Introduction Notes

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. Earthquake Introduction Notes

  2. Causes of Earthquakes • As the crust tries to move, pressure builds • When crust finally moves, pressure and energy is released. • Released as Seismic Waves.

  3. Different Sized Earthquakes • Bigger quakes release more pressure • Smaller quakes release less pressure • Pressure builds more when rocks in crust are very strong and bumpy. Since crust gets stuck and holds, more energy and pressure

  4. 2 Ways to Measure Earthquakes: • Richter Scale – Measures magnitude (strength) of quake. Based on how much energy is released. Each number on the Richter Scale represents an earthquake that is 10 times stronger. 3.0 quake is 10 times stronger than a 2.0 quake. 6.0 quake is 100 times stronger than a 4.0 quake.

  5. 2nd way to measure an earthquake: 2. Mercalli Scale – Measures intensity(amount of damage) of quake. Describes what the quake would feel like.

  6. Where Earthquakes happen (copy picture) Focus- Point underground where land actually moves. Starting point of earthquake. Epicenter – point on Earth’s surface directly above the focus. The earthquake feels the strongest here.

  7. Seismic Waves (Review): Waves of energy that travel through the Earth during an earthquake. (Three types: P, S, and Surface waves) P and S waves travel into and through the Earth. Surface Waves: The most destructive seismic waves, they travel across the surface of the Earth.

More Related