Volcanoes
Earthquakes
Plate Tectonics
Technology
Vocabulary
100
Type of volcano with alternating layers of ash and cinders.
What is a cinder cone volcano?
100
Shocks or tremors that occur after an Earthquake
What is Aftershocks?
100
The fault that lies along the California border.
What is the San Andres Fault?
100
Type of scale that measures strength of earthquake. It's range is from 1-9.
What is The Richter Scale?
100
The origin of an earthquake and the most dangerous spot to be during an earthquake.
What is the epicenter?
200
Type of volcano with steep slope, violent eruptions and felsic lava.
What is a composite volcano?
200
A crack in a rock caused by the movement of Earth's crust.
What is a fault?
200
The plate which has the most activity as far as earthquakes and volcanoes.
What is Pacific Plate?
200
Type of scale that measures strength of an earthquake. It ranges from I to XII.
What is the Mercalli Scale?
200
Dark-colored, low-silica magma.
What is mafic magma?
300
Type of volcano with mafic lava, gentle slope and quiet eruption.
What is a shield volcano?
300
The center of an earthquake.
What is a focus?
300
The term used to define an area in which 80% of the Earth's volcanoes are.
What is The Ring of Fire?
300
An instrument that measures how much the ground shakes.
What is a seismograph?
300
Light-colored, high-silica magma.
What is felsic magma?
400
The number of active volcanoes.
What is 1,500?
400
Type of building that has a better chance of surviving an earthquake.
What is a wide based building?
400
The U.S. states that are included in The Ring of Fire (there are 4).
What is Alaska, California, Oregon and Washington?
400
Type of scientist who studies the Earth.
What is a Geologist?
400
Colliding plates are called this.
What is convergent plates?
500
Molten rock below earth's surface.
What is magma?
500
When two plates collide causing one plate to slide under another plate.
What is subduction?
500
The name of the land mass prior to the plates spreading apart.
What is Pangea?
500
A scientist who specifically studies volcanoes.
What is a Volcanologist?
500
Plates moving apart are called this.
What is divergent plates?
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