Lava & Pyroclastic Material Volcano Mechanics Volcano Grab Bag Earthquake Basics Measuring and Locating Earthquakes
100
Solid material ejected from a volcano
What is pyroclastic material?
100
Basaltic
What kind of magma would you expect to find at an oceanic hotspot?
100
Caldera
What is the term for the crater on top of a volcano?
100
All (convergent, divergent, transform)
At what kind(s) of tectonic plate boundaries do earthquakes occur?
100
Seismograph
What device is used to measure earthquakes?
200
Lava
What is molten rock called, when it has reached the Earth's surface?
200
Continental hotspots
Where will the most explosive volcanic eruptions take place?
200
Volcanic Mudflow
What is a lahar?
200
Focus
What is the term for the point underground where movement begins in a earthquake?
200
Triangulation
You can find the location of an earthquake by plotting its distance from 3 points. What is this process called?
300
Ash
What is the smallest, finest kind of pyroclastic material?
300
Andesitic
What kind of magma forms volcanic arcs and island arcs?
300
Basaltic
What kind of lava are shield volcanoes formed from?
300
Aftershock
What is the term for a small earthquake that happens after the main quake?
300
Primary wave or P-wave
What kind of body wave will arrive first at an earthquake monitoring station?
400
Pyroclastic Flow
What is the term for a superhot avalanche of ash, rock, and gases?
400
It has a lot of water in it
Why does subducting oceanic crust melt into magma so easily?
400
Lots...
Name 1 volcano on earth that has erupted in recorded human history.
400
An oceanic plate snaps upward, and pushes a mass of water with it
Briefly explain how a tsumani happens.
400
Station 1
At station 1, the P-wave and S-wave arrive 3 minutes apart. At station 2, the P-wave and S-wave arrive 5 minutes apart. Which station was closer to the earthquake?
500
Blocks are solid when ejected from a volcano, bombs are semi-molten
What is the difference between a block and a bomb?
500
Divergent Boundaries
Where does a pressure release on the mantle allow magma to easily form?
500
The rim of the Pacific Ocean, which is ringed by subduction zones and volcanoes
What is "The Ring of Fire?"
500
Between the soil grains
When liquefaction occurs, there can be flooding on the Earth's surface. Where did all the water come from?
500
Rayleigh wave
What kind of earthquake wave is Mr. Green simulating?






Volcano & Earthquake Trivia

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