

Earthquakes and Volcanoes
Presentation
•
Science
•
9th Grade
•
Practice Problem
•
Easy
Ser-Lein Wan
Used 3+ times
FREE Resource
6 Slides • 6 Questions
1
Open Ended
Define lava:
2
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Define active:
3
Open Ended
Compare the shield and cindercone volcanoes.
4
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Define extinct:
5
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Define dormant:
6
7
measures the intensity based on damage at a specific location
Mercalli
measures the energy released as a magnitude/number
Richter
8
9
10
The main difference between the two scales is that the Mercalli scale is based on observable damage and the Richter scale is based on the seismic waves produced from earthquakes.
11
Poll
Do you understand?
Yes
No
I think so
12
Focus: the place where earthquake starts
Epicentre: point on Earth's surface directly above focus
Seismic waves: the wave caused by the ground shaking back and forth
Seismometer: instrument used to measure an earthquake
Aftershock: small earthquake that echoes or follows a larger one
Define lava:
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