What are Earthquakes?
Earthquake Measurement
Earthquakes and Society
Volcanic Eruptions and Effects
Causes of Volcanic Eruptions
100
This is where most earthquakes take place
What are tectonic plates?
100
tracing of earthquake motion that is created by a seismograph
What is a seismogram?
100
Measure of how likely an area is to have a damaging earthquake
What is earthquake hazard?
100
landform caused by repeated eruptions of lava
What is a volcano?
100
This type of volcano may erupt again ( also known as sleeping)
What is a dormant volcano?
200
A break in the earth's crust
What is a fault?
200
The scale used to measure earthquake damage
What is Modified Mercalli Intensity Scale
200
Process of making older structures more earthquake resistant
What is retrofitting?
200
long cracks in the Earth's crust
What is a rift?
200
This type of volcano will probably never erupt again
What is an extinct volcano?
300
Waves of energy that travel through the Earth away from an earthquake in all directions
What are seismic waves?
300
Scale used to measure earthquake strength
What is Richter scale?
300
something that acts as a shock absorber for a building during an earthquake
What is a base isolator?
300
magma that is BLASTED into the air and hardens during an explosive eruption
What is pyroclastic material?
300
Where tectonic plates collide
What is convergent boundary?
400
Seismic waves that cause particles of rock to move back and forth
What are P waves?
400
Point on the Earth's surface directly above the earthquake's starting point
What is epicenter?
400
weight located at the bottom of the building to help offset building movement (computerized)
What is active tendon system?
400
a funnel shaped pit near a volcano's central vent
What is a crater?
400
where tectonic plates separate
What is divergent boundary?
500
Seismic waves that cause particles of rock to move side to side
What are S waves?
500
Point along a fault at which first motion of an earthquake occurs (Inside the Earth)
What is the focus?
500
A weight placed on the roof of a building to counteract building movement
What is mass damper?
500
a large, semicircular depression over a magma chamber
What is a caldera?
500
a set of deep cracks between tectonic plates
What is rift zone?
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