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Earthquakes

Shake, Rattle, and Roll. Earthquakes. Click to watch video. Course Learning Objectives. Earthquakes To be familiar with forces that causes earthquakes To describe where earthquake waves begin and how they travel To identify the causes of earthquake damage. Causes of Earthquakes.

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Earthquakes

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  1. Shake, Rattle, and Roll Earthquakes Click to watch video

  2. Course Learning Objectives • Earthquakes • To be familiar with forces that causes earthquakes • To describe where earthquake waves begin and how they travel • To identify the causes of earthquake damage

  3. Causes of Earthquakes • Plate Tectonics • Landslides • Deep injection of water in to wells • Magma moving up toward the ground surface • Asteroids

  4. Earthquake Hocus Pocus • EQ weather • Time of Day • EQ Seasons • Astrology • Clash of the Titans • Etc.

  5. Earthquake Waves • Start at the Focus • Body waves • Can travel through the “body” of the Earth

  6. Earthquake Waves • Primary waves • Travel through solid and liquid (crust, mantle, core) • Fastest type of seismic wave • Secondary waves • Cannot travel through liquid (Earth’s outer-core) • Slower than P-waves

  7. Earthquake Waves • Surface wave • Begin at epicenter, not focus • Slowest type of seismic wave • Does the most damage to structures

  8. EQ Damage • Causes • Duration of Shaking • Ground shakes longer in higher magnitude EQ • Distance and depth of the EQ • Further away you are, usually the less damage • Liquefaction • The changing of a solid into a liquid during the period of strong ground shaking, kind of like quicksand • Quake lakes • Form when landslides block rivers causing flooding

  9. Learning Objects - Matching • The slowest type of seismic wave. • The fastest type of seismic wave. • The seismic wave that is slower than p-waves. • Explains earthquakes, volcanoes, and much more. • Earthquake waves begin at the _____. • The _____ is located on the Earth’s surface. • The changing of a solid into a liquid. • Form when land slides block rivers. • Is a one of the causes of earthquakes. • EQ Weather. • Asteroids • Epicenter • Focus • Hocus Pocus • Liquefaction • Surface waves • Plate Tectonics • Preliminary waves • Quake Lakes • Secondary waves

  10. Required Reading • The Science of Earthquakes • Plate Tectonics –Please complete activities and quizzes. • Volcanic Earthquakes • Earthquakes, Mega quakes, and the Movies

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