Causes vibrations in the ground that results from movement along breaks in the Earth’s lithosphere
What is earthquakes
100
The area of earthquake and volcano activity around the Ring of Fire
What is Pacific
100
Boundary where one tectonic plate descends into the mantle and partially melts
What is Convergent
100
Magma with high silica content
What is Andesite
100
Boundary where two tectonic plate separate
What is Divergent
200
To cause to disperse or disappear
What is Dissolved
200
P-wave fastest-moving type of seismic wave-causes push-pull motion
What is Primary Wave
200
Is a depression formed when a volcano’s summit collapse or is blown away by an explosive eruption
What is Caldera
200
S-wave causes particles in the ground to move side to side and up and down at right angles
What is Secondary Wave
200
a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.
What is Water
300
A measure of earthquake magnitude
What is Richter Scale
300
Molten rock below Earth’s surface
What is Magma
300
Magma that is rich in silica forms when the mantle mixes
What is Continental Crust
300
Dissolved amounts of viscosity that determines the explosiveness of magma
What is Gasses
300
Vent in the Earth’s crust through which molten rock flows
What is Volcano
400
consists of fragments of pulverized rock, minerals and volcanic glass, created during volcanic eruptions.
What is Volcanic Ash
400
hot molten or semifluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this.
What is Lava
400
Earthquake risk is the probable building damage, and number of people that are expected to be hurt or killed if a likely earthquake on a particular fault occurs.
What is Earthquake Risk
400
the point of origin of an earthquake.
What is Focus
400
a twelve-point scale for expressing the local intensity of an earthquake, ranging from I (virtually imperceptible) to XII (total destruction).
What is Mercalli Scale
500
a hard, unreactive, colorless compound that occurs as the mineral quartz and as a principal constituent of sandstone and other rocks.
What is Silica
500
a steep conical hill of tephra (volcanic debris) that accumulates around and downwind from a volcanic vent.
What is Cinder Cone Volcano
500
the state of being thick, sticky, and semifluid in consistency, due to internal friction
What is Viscosity
500
a dense, destructive mass of very hot ash, lava fragments, and gases ejected explosively from a volcano and typically flowing downslope at great speed.
What is Pyroclastic Flow
500
when runny lava escapes through a fissure and flows a long way