Key Words Volcanoes Flashcards
1
Q
lava
A
Magma on the surface
2
Q
Vent
A
Pipe to spit out lava
3
Q
Fissure
A
Long crack, lava comes out
4
Q
Plateau
A
Relatively flat are of land
5
Q
Cone
A
Common shape of volcano
6
Q
Silica
A
It controls the viscosity of the magma
7
Q
Active
A
Awake volcano
8
Q
Dormant
A
Asleep volcano
9
Q
Extinct
A
Won’t erupt again
10
Q
Hot spot
A
Volcanic eruptions take place at
11
Q
Pyroclasts
A
Fragments ejected during explosive eruptions
12
Q
Pyroclastic flow
A
a dense, destructive mass of very hot ash, lava fragments, and gases ejected explosively from a volcano and typically flowing at great speed.
13
Q
Volcanologist
A
A scientist who studies volcanoes
14
Q
Ridge
A
the volcanic activity forms new land between tectonic boundaries creating volcanic ridges at the spreading zone
15
Q
VEI scale
A
A scale from 1-10 to determine the power of an eruption
