Earthquakes and Volcanoes

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Earthquakes and Volcanoes

• By
• Brianna Shields
• February 8, 2005

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GOAL

• To explain the theory of plate tectonics and to
  relate it to areas of volcanic and earthquake
  activity

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Assessment

• Use your notes to help you label the picture of
  the lithospheric plates at the plate boundaries
• The teacher will go over the answers with you in
  approximately 5 minutes

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Earthquakes

• How are earthquakes caused?

• Rocks rubbing at fault lines
• Transform/strike slip boundaries
• Plates that are shearing or faulting
• Occur on land or in oceans

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Earthquakes

• What do earthquakes cause?

• 1. Destruction of landforms
• Destroying cities, mountains, plateaus, etc.
• 2. Landslides
• Vibrations of a mountain can cause massive
  movements of rocks down slopes
• 3. Tsunamis
• Earthquakes at oceanic plate boundaries can
  create giant waves

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Earthquakes

• Parts of an earthquake

• 1. Focus
• Point beneath earths surface where rocks break
  and move

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Earthquakes

• Parts of an earthquake

• 2. Epicenter
• Point directly above focus, on earth surface,
  where most violent shaking occurs

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Earthquakes

• Earthquake Vocab

• 1. Richter Scale- ranks the intensity of an
  earthquake

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Earthquakes

• Earthquake Vocab

• 2. Seismograph- measures the intensity of an
  earthquake

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Earthquake Damage
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Landslides caused by Earthquakes
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Tsunamis
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Tsunamis- Recent One near Indonesia
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Tsunamis
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Tsunamis
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Tsunamis
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Tsunamis
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Tsunamis
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Tsunamis
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Tsunamis