What is, at divergent boundaries, at convergent boundaries, and at hot spots?
100
This type of volcano is the one we all grew up seeing in the dinosaur books. It's shape is very "classic volcano."
What is a Cinder Cone volcano?
100
This hazard would make breathing difficult as it rainined down through the air.
What is volcanic ash?
100
This can be very fine grained, or even the size of rocks and boulders, making up volcanic ash.
What is tephra? (Notice, tephra isn't a part of the Shield volcanoes. They don't send up volcanic ash.)
100
This is the force that causes magma to rise to the surface.
What is buoyant force?
200
The difference between magma and lava.
What is magma is underground, lava is above ground?
200
You might not even realize you're standing on a volcano with how low and gentle sloping this formation is.
What is a shield volcano?
200
The danger with having a glacier on top of a volcano.
What is a lahar could form as the glacier's ice melts instantly as the volcano errupts?
200
The name of the mountain that went kaboom in 1980.
What is Mt. St. Helens?
200
Sticky, thicker lavas are rich in this.
What is silica? (Just like rich in cornstarch meant a sticky thick goop.)
300
The volcanoes we have here in California form via this plate boundary.
What is subduction, convergent boundary?
300
Having high silica in the lava will always tell you these three things:
What is high viscosity, explosive eruption, and a Granitic lava?
300
The people in Hawaii have to deal with this on a daily basis.
What is lava flow?
300
This type of eruption is subtle, through long cracks.
What is a fissure eruption?
300
This lava tends to erupt explosively.
What is granitic lava?
400
The difference between Island Arcs and Volcanic Arcs.
What is island arcs form when two oceanic plates are pushed together. Volcanic arcs form when an oceanic plate sinks, subducts, beneath a continental plate?
400
If you were in the ocean, this plate would be slowly, moving, sliding down towards the California coast.
What is the Juan de Fuca plate?
400
A pyrocloastic flow, traveling at 150mph was the final nail in the coffin for this civilization.
What is the people/city of Pompei?
400
A batholith.
What is the largest intrusive feature of a volcano - magma that cooled and hardened before reaching the surface? (They can spread out for miles!)
400
This fill with water, creating beautiful lakes.
What are calderas?
500
This is how new crust and sea-floor is formed.
What is through fissure eruptions, at divergent plate boundaries?
500
Three differences between Pahoehoe and Aa lava.
What is Aa lava flows slowly/at low temperatures, Aa is stiffer, while Pahoehoe is smooth and has a rope-like structure when it cools?
500
Three of the warning sings that an erruption may be coming.
What are small earthquakes, gas emissions, ground movement, or temperature increases?
500
The difference between a dike and sill.
What is a dike is a vertical layer of cooled magma? What is a sill is a horizontal layer of cooled magma?
500
Scientists called _________ study volcanoes and analyze lava samples to help them better understand volcanic eruptions.