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Earthquakes and Volcaneos

Horizontales
Area along a fault where slippage first occurs.
Used to find the rating of the size of seismic waves.
Lava that lighten when it hardens. Rich in silica.
First waves to arrive. They also travel the fastest.
The point on the Earth's surface directly above the focus.
Where one plate moves under the other into the asthenosphere.
Volcano that produces explosive eruptions. It is the main type of volcano.
Magma that erupts out of the Earth's surface.
Magma works its way to the Earth's surface within the interiors of the lithospheric plate. Many volcanoes can be found here.
Volcano that produces quiet eruptions. They are formed by slow lava-not tall.
Rocks that break because of low temp and pressure.
Verticales
Funnel-shaped pit at the top of a volcanic cone.
Vibrations that travel through Earth carrying the energy released during an earthquake.
Expresses the intensity of an earthquake. Roman Numerals are used.
Volcano that Is tall and has steep sides. It can produce quiet ad explosive eruptions
Tremor that follows and is smaller than a major earthquake.
As the plates pull apart, magma wells upward along the rift zone.
Lava that is dark in color when it hardens. Rich in Mg.
Made of other rock forming materials, gas, water, and silica.
Second waves to arrive. These shake the ground back and fourth.