Volcano
Volcanic Mountain
Form when molten rock erupts a hole in the earths crust.
Earths 3 major layers
Crust, Mantle,Core
Molten rock
Magma
An instrument to record and study the vibrations caused by earthquakes.
seismograph
An opening an earth's surface though which hot gases, ash, and molten rock are ejected from for the earth's interior.
Volcano
3 types of volcanoes
Cinder-cone,Composite,Sheild
A weak earthquake
Tremor
The belt over half of the world's active volcanoes
Ring of fire
A record produce by the seismograph
Seismogram
Sphere of store a region of the earth's crust and upper mantle
Lithosphere
The point where earth begins.
Focus
The area between the upper and lower mantle
Transitional zone
The most abundant element in the earth's crust
Oxygen
A vertical sheetlike mass of igneous rock
Dike
A huge bowl-shaped crater caused by collapsed magma chamber
Caldera
3 types of earthquake waves from fastest to slowest
P waves, S waves, Surface waves
Any substance emitted from an active volcano.
Ejecta
Horizontal sheetlike mass of igneous rock
Sill
A superheated cloud of gas and volcanic ash that travels swiftly down volcano slape as an avalanche.
Pyroclastic flow
Rocks that buckle upward into an archlike structure
Antcine
The point on the earth's surface directly above the focus
Epicenter
rock on either side of a fault spring back to a position of a little to no strain movement of an earthquake
Elastic rebound theory