Plate Boundaries
Plates that move away from one another.
What is divergent boundary?
Earthquakes occur at these types of plate boundaries.
What are convergent and transform?
Magma that moves slowly and has high silica content
What is rhyolitic magma?
The measurement of the strength of an earthquake
What is magnitude?
A seismograph records the first P-wave of an earthquake at 5:30 am and the first S-wave at 5:45 am. Calculate lag-time.
What is 15 minutes?
The two types of convergent plate boundaries?
What are subduction and collision?
Islands that form along subduction boundaries.
What are island arc chains?
A large volcano with steep sides made of layers of cooled lava and ash that has big eruptions.
What is composite volcano?
The Moment Magnitude scale is logarithmic. Each numerical increase by 1 correlates to ____ more shaking and ____ more energy
What is 10? What is 32?
The magnitude at which you feel an earthquake
What is magnitude 2.5?
The explanation for the breakup of Pangea.
What is Continental Drift?
A long chain of volcanoes found on the ocean floor (at div. boundaries).
What is mid-ocean ridge?
A short, wide volcano that has frequent, non-explosive eruptions
What is shield volcano?
The point from which energy is released in an earthquake.
What is focus?
The magnitude at which earthquakes start to cause significant damage.
What is magnitude 5.5?
New ocean floor is created here by cooling lava.
What is divergent boundary?
Plate boundary where the deepest trenches in the world can be found.
What are subduction boundaries?
A short, small, rounded volcano with slow moving lava.
What is Lava Dome?
Earthquakes are caused by...
What is a sudden release of built up stress/tension due to the movement of tectonic plates?
The seismic waves that cause side to side shaking are _______ and the waves that cause up and down shaking are _______.
What are p-waves? What are s-waves?
The reason why oceanic crust will subduct and continental crust will not.
What is density?
Landforms created at transform boundary
What is transform fault line?
A volcanic island in the middle of a tectonic plate is most likely caused by a...
What is hot spot?
The order of earthquakes waves from fastest to slowest?
What is p-wave, s-wave, surface wave?
When saturated ground shakes so hard it behaves like quicksand.
What is liquefaction?