Earthquakes
Presentation
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Science
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7th Grade
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Practice Problem
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Medium
Standards-aligned
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11 Slides • 13 Questions
1
Earthquakes
"Mom the ground moved"
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Shaken not stirred
Each year there a re approximately 500,000 earthquakes happens each year
In the united states, the state with most earthquakes on average is Alaska
Every year, earthquakes cause billion of dollars in damages in the united states
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Multiple Choice
How many syllables are in earthquake?
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Multiple Choice
How many syllables are in
the phase epic center?
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The 2008 Illinois earthquake was one of the largest earthquakes ever recorded in the Midwest state of Illinois. This moderate strike-slip shock measured 5.2 on the moment magnitude scale and had a maximum Mercalli intensity of VII (very strong). It occurred at 04:36:59 local time on April 18 near West Salem and Mount Carmel, Illinois, within the Wabash Valley Seismic Zone. Earthquakes in this part of the country are often felt at great distances.
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Multiple Choice
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3D picture
of earthquake
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Poll
Every experienced a earthquake?
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Poll
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Hazardous
Earth quakes leads to fire, floods and home being destroyed
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Epic center
The epci center is the location on Earth's surface from which the earthquake seems to radiate. It is the point directly above the focus.
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An earthquake is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes can range in size from those that are so weak that they cannot be felt to those violent enough to propel objects and people into the air, and wreak destruction across entire cities. The seismicity, or seismic activity, of an area is the frequency, type, and size of earthquakes experienced over a period of time. The word tremor is also used for non-earthquake seismic rumbling.
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This illustration show how earthquakes can cause extreme damages and loss of life.
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Divergent Boundaries
Get away from me!
At divergent boundaries , plates pull away. They stretch rocks and make them thinner. This is know as tension.
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Convergent Boundaries
At convergent boundaries plates collide, causing rock to be squeezed. This is know as stress.
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Transformed boundaries
A transformed boundaries is a plcae where two textonic plates slide past ech other horizontally.
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Multiple Choice
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Multiple Choice
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Multiple Choice
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Multiple Choice
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Multiple Choice
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Multiple Choice
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Multiple Choice
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Multiple Choice
Earthquakes
"Mom the ground moved"
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