Earthquakes:

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Earthquakes What is it? What does it cause?
Mrs. Borgman 8th Grade Science
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Can a deaf person be a scientist?Who is
Guillame Amontons?
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What are Earthquakes?
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Lets look inside the earth!
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The Inside of the Earth
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(No Transcript)
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Two things can happen

• A Mountain
• An Earthquake

Picture Courtesy of Getty Images
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What do earthquakes cause?
Your turn to answer!
Picture Courtesy of Ocean County College
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Ground shaking
When the ground shakes buildings can fall.
Ground shaking can also cause roads to be
damaged.
Click here to watch a video. Click here to watch
a video.
Pictures Courtesy of USGS
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Landslides
Mud and rocks become loose. The mud and rocks
slide down the hill. Sometimes houses are
destroyed.

• Click here to watch a video.

Picture Courtesy of USGS
Picture Courtesy of the List Universe
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Fires
Power lines can catch on fire. This causes grass
to catch on fire. The fire spreads.
Click here to watch video.
Picture Courtesy of Mark Theissen
Picture Courtesy of Mark Theissen
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Surface faulting
The ground breaks and cracks. Sometimes the road
is damaged.
Picture Courtesy of USGS
Picture Courtesy of Getty Images
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Liquefaction
The ground becomes soft. Buildings sink into the
ground.
Click here to watch video.
Picture courtesy of NGDC
Photo Courtesy of the University of Washington
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Tsunamis
Earthquakes under the water cause tsunamis. A
lot of water comes on to the land. Many people
die because there is no warning.
Where does it start? What happens when it hits
land?
Photo Courtesy of Digital Globe
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Earthquake Webquest

• Introduction
• Today there was an earthquake in Denton and many
  people are scared. It is your job as a news
  reporter to explain to the people what
  earthquakes are, what they cause, and how they
  can prepare for an earthquake if it happens
  again.
• You will videotape your report and it must be at
  least four minutes long.

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Lets Review!
What causes an earthquake?
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Lets Review!
Name one event earthquakes cause and why it is
bad.
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Lets Review!

• Why is it important to your life to know about
  earthquakes?

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Lets Review!

• Compare liquefaction and landslides.

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Lets Review!

• Can you think of a natural event we have here in
  north Texas that causes a lot of damage?

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Lets Review!

• Earthquakes cause ground shaking, landslides,
  fires, surface faulting, liquefaction, and
  tsunamis. Which of these do you think is the
  worst? Why?