Earthquakes
The vibrations in the ground that results from movement along breaks in Earths lithosphere.
Earthquakes
Molten rock below earths surface.
Magma
A vent in Earths crust through which melted rock flows.
Volcanoes
A break in Earths lithosphere where one block of rocks moves toward, away, from or past another.
Fault
Energy that travels as vibrations on and in Earth.
Seismic waves
Volcanoes that are not associated with plate boundaries.
Hot spot
Molten rock that erupts onto earth's surface.
Lava
Waves that originate where rocks first move along the fault at a location inside earth.
Focus
The location on earths surface directly above the earthquakes focus.
Epicenter
Common along divergent plate boundaries and oceanic hot spot, large gentle slopes of basaltics lava
Shield Volcanoes
large steep-sided volcanoes that result from explosive eruptions of andesitic and rhyolitic lava and ash along convergent plate boundaries.
Composite Volcanoes
P-waves cause particles in the ground to move in push-pull motion similar to a coiled spring.
Primary Wave
S-waves, slower than P-waves, they cause particles to move up and down at right angels relative to the direction the wave travels.
Secondary waves
Small steep sided volcanoes that erupt gas risch basaltic lavas
Cinder cones
Tiny particles of pulverized volcanic rock and glass
Volcanic Ash
Cause of particles in the ground to move up and down in a rolling motion.
Surface wave
Scientist that study earthquakes
Seismologist
A liquid's resistance to flow
Viscosity
A graphical illustration of seismic waves.
Seismogram
Measure and records ground motion and can be used to determine the distance seismic waves travel.
Seismometer