Vocabulary
Where Volcanoes Occur
Types of Volcanoes
Types of Eruptions
Random
100
What is lava?
What is magma that flows onto the earths surface
100
When one tectonic plate is moving under another a _____ is formed.
What is trench
100
there are 5 types of volcano shapes? (true of false)
What is false, 3
100
Hawaii has what type of eruption?
What is quiet
100
How hot can volcanoes be?
What is 2000 Degrees F
200
define vulcanism
What is any activity that includes the movement of magma towards the earth's surface
200
where do most volcanoes occur?
What is along tectonic plate/fault line
200
a ________ volcanic eruption will produce alternating quiet and explosive eruptions.
What is composite
200
describe an explosive volcano
What is large amounts of trapped gas causes explosion, lava or ash or both
200
What is a volcano?
What is a vent in earth's surface where magma and gases are expelled
300
what is a hot spot?
What is volcanic activity on the earth's surface but not on a tectonic plate, mantle plumes
300
a mid ocean ridge occurs when?
What is when plates are moving away from one another
300
describe a shield volcano
What is broad base, sloping sides, quiet eruption
300
What is another term for a lava flow?
What is lahars
300
what is the difference between magma and lava?
What is magma underneath earth, lava on earth surface
400
what is a pluton?
What is volcanic activity where lava or ash do not exit the volcano (large rock formation)
400
what is an island arc?
What is a string of volcanoes along a trench or plate
400
Which volcano type has steep sides, form from explosive eruptions, and has pyroclastic material?
What is cinder cone volcano
400
Mount saint Helen is what type of eruption?
What is explosive
400
what does magma under water form?
What is underwater pillows
500
what is the difference between low and high viscosity?
What is low = quiet eruptions, lava moves slower. high = explosive eruptions, lava moves fast
500
describe what is occurring in a subduction zone
What is one tectonic plate is moving under another one
500
Draw and label each type of volcano shape in 30 seconds. Go!
What is drawing
500
define pyroclastic material
What is fragments of rock that form during an eruption (ash, dust)
500
Name the 3 most dangerous volcanoes in Iceland
What is laki, hekla, katla
M
e
n
u