Volcanoes
This explains the cause behind why quiet and explosive volcanoes behave differently.
What is silica content (and pressure build-up).
This is the result of two continental crust pieces converging.
What is mountain building?
In the ground, molten rock is called ___________, but when it reaches earth's surface, it's called __________.
What are magma/lava?
These seismographic waves are the fastest, thus they arrive first at the seismograph station.
What are P waves?
This U. S. state is the result of a hot spot.
What is Hawaii?
This type of volcano results in a low wide cone and is caused by extremely hot runny magma.
What is a shield volcano?
When a piece of oceanic crust converges with a continental plate, this results.
What is subduction? (Resulting in trench formation, volcanoes, and possibly tsunamis)
This scale quantifies the strength of an earthquake's power.
What is the moment magnitude scale (or Richter scale)?
These waves shake the ground side to side, and are the second seismic waves to occur after an earthquake.
What are S waves?
In which U. S. state would you be most at risk from an earthquake.
What are one of the following: Alaska, Washington, Oregon, or California?
Mt. St. Helens and other very large layered volcanoes are this type.
What is composite?
When two oceanic plates diverge, this results.
What is seafloor spreading (and mid-ocean ridge formation)
This term refers to the rim of the Pacific Ocean where seismic activity is common.
What is Ring of Fire?
These waves actually do the destruction after an earthquake. They move the ground like ocean waves.
What are surface waves?
The Mercalli scale to measure earthquakes is based on this.
What are people's observations (of the damage)?
This smallest, simplest type of volcano.
What is a cinder cone?
When two continental plates diverge, this results. (Hint: like what is happening in Africa or Iceland)
What is a rift?
Hawaii is one of these. It results when a plate moves across a hot spot.
What is an island arc?
You see a seismogram with really high amplitude. This could be caused by...
What are either a really powerful earthquake OR the seismograph machine is close to the epicenter?
This black volcanic rock can be split to form an edge that is sharper than a surgeon's scalpel.
What is obsidian?
These are the three causes of volcanoes.
What are divergence (subduction), divergence (seafloor spreading), and hot spots?
This is the common result of transform plate boundary interactions.
What are (deep and powerful) earthquakes?
This is the dished in area at the mouth of a volcano's main vent.
What is a crater?
This piece of equipment records the vibration of an earthquake.
What is a seismograph?
This U. S. state has a supervolcano deep beneath it.
What is Wyoming?