Earthquakes
This is the place where earthquakes originate.
Epicenter.
These can be caused by _____? (two answers)
1.) Underwater earthquakes
2.) Landslides.
Where can volcanoes form?
Divergent and convergent boundaries, and hotspots
Plates moving against each other horizontally.
Lateral slipping.
This is used to measure the strength of the earthquake, or seismic activity.
Seismograph.
The taller it becomes.
Approximately, how many active volcanoes are there?
1500
Plates moving away from each other.
Divergent boundary.
This is used to measure earthquakes on a numerical scale.
Richter Scale
This is an/what causes earthquake(s)
A rupture or sudden movement of rocks along a fault line.
What might you see if there's a tsunami coming?
Water from the shore will seem to pull back into the ocean.
50-60
The surface along which plates move is called?
Replaced the Richter Scale for measuring the magnitude of an earthquake.
What might happen when there's an earthquake?
Liquefaction.
520m
Mountains in the water are called?
Mid-ocean ridges.
This causes horizontal movement of the plate.
This measures movement across surface fissures and faults.
Creepmeter/Crackmeter
The fast moving, hot wave of gas and dust that accompanies an eruption.
Pyroclastic Flow
Which country has the most tsunamis?
Japan generates 21% of global tsunamis.
What is a hotspot?
Places where the mantle melts and magma rises to the surface.
This causes vertical movement along two plates.
This measures permanent displacement of Earth's crust over time.
GPS/GSSN Units