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EARTHQUAKES & VOLCANOES REVIEW
Which seismic waves are the fastest?
Which seismic waves are the first to be recorded?
Which seismic waves are the second to be recorded?
Which seismic waves can only travel through solids?
Which seismic waves are the slowest?
Which seismic waves travel on the surface?
What is the boundary between the crust and the mantle due to the change of speed of seismic waves?
What are the areas called where neither S nor P waves can be detected?
What is the theory that says energy builds up on each side of a fault and the rocks move slowly and then spring back to their original shape?
Elastic rebound theory
What are small tremors that occur after the first release of energy?
What is the area where the slippage first occurs inside the earth?
What is the point on earth’s surface directly above the focus?
What are the three classifications of foci?
Shallow, intermediate, and deep
What are the three major earthquake zones?
1.Pacific Ring of Fire 2.Mid-ocean ridges 3.Eurasian – Mediterranean mt. belt
What is the name of the fault in California where the Pacific plate and North American plate slide past each other?
San Andreas Fault (technically it’s the N. American plate and the Juan de Fuca plate)
What is the device used to record earthquakes?
How many stations are needed to locate an earthquake?
Which scale measures the magnitude or the amount of energy released from an earthquake?
What are the numbers for the Richter scale?
Arabic Numerals They begin a 1-2 and it is an open-ended scale, based on the seismograph’s reading.
Which scale measures the intensity or amount of damage from an earthquake?
What are the numbers for the Mercalli Scale?
What can be generated from an earthquake with an epicenter on the ocean floor?
What is the molten rock beneath earth’s surface called?
What is molten rock on earth’s surface called?
What is it called when one plate moves under another plate and forms volcanic mountains?
What is it called when plates move apart and magma rises to form new ocean floor?
What are areas of volcanic activity within a plate (not on a boundary) called?
Intraplate volcanism (aka hot spot)
What is the lava that comes from quiet eruptions called?
Mafic (aka basaltic lava)
What is the lava that comes from explosive eruptions called?
Felsic Lava (aka rhyolytic lava)
What is mafic (basaltic) lava that looks ropey and wrinkled when it is hardened?
What is mafic (basaltic) lava that is sharp and jagged when it hardens?
What is the volcanic cone that has gently sloping sides from quiet explosions?
Shield Cone Volcano
What is the volcanic cone that has steep sides from explosive eruptions?
What is the volcanic cone that is a combination of quiet and explosive layers?
Composite Cone (aka stratocone)
What is a funnel shaped pit at the top of a vent that formed when a volcano exploded?
What is formed when a volcanic cone collapses when emptied, leaving behind a large basin that can fill with water?
The name of a volcanic fragment is determined by what?
Size of the particle
What is the general name for rock fragments that are ejected from a volcano?
What are the two smallest types of tephra?
Dust and ash
What are clots of lava that spin into the air and cool to make a spindle shape?
What is the name of the largest volcano – on Mars?
What is the name of Jupiter’s moon that has the most active volcanoes?
This concludes today’s fun. Please put everything away and let’s begin the test!!!
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