Volcanos
This is a channel in volcanos in which gasses, ash, and motlen rock are ejected from the earth's interior.
What is a vent?
This is the point on earth's surface directly above where an earthquake begins.
What is an epicenter?
This is how scientists determine the point where and earthquake begins.
What is by measuring travel time of seismic waves?
This is a particle or block of solid volcanic ejecta.
What is a pyroclast?
This type of mountain appears to have formed by the edges of two adjacent tectonic plates pushing together.
What is a folded mountain?
This consists primarily of erupted volcanic ash and rock fragments held loosely together.
What is a cinder- cone volcano?
This is most likely to cause a volcanic eruption to be violent.
What is large amounts of dissolved gas?
The point deep within the earth where an earthquake begins.
What is the hypocenter?
This scale is used to measure the damage of an earthquake.
What is modified Mercalli?
This is the study of earthquakes.
What is seismology?
An earthquake caused by sudden movements of rock beneath the earth's surface is a ________ earthquake.
What is a tectonic earthquake?
Formed partly by explosive eruptions of ash and rock fragments and partly by mild lava flows.
What is a composite volcano?
Hardened lava with a surface that is either smooth or ropy.
What is pahoehoe?
These are the fastest type of earthquake waves.
What are P or primary waves?
The slowest type of earthquake waves.
What are surface waves?
The fracture zone between stationary and moving rocks.
What is a fault?
This is the idea that rapid movement of tectonic plates during the Flood is responsible for most of Earth's features.
What is catastrophic plate tectonics?
This is a volcano that is inactive but can erupt again.
What is a dormant volcano?
Superheated cloud of gas and small particles that travels as an avalanche.
What is pyroclastic flow?
Smaller earthquakes often follow a larger earthquake at frequent intervals.
What are aftershocks?
A computer system that stores and processes geographic data from various sources.
What is the geographic information system?
The idea that rocks on either of a fault spring to a position of little or no stress after and earthquake.
What is elastic rebound?
This major fault type occurs when rocks on one side of the fault are showed over the rocks on the other side.
What is a thrust fault?
Hardened lava that forms rough, jagged rocks with a crumbly texture.
What is AA?
The general name for a mass underground volcanic rock.
What is igneous intrusion?
The system that detects earthquake waves and automatically sends out a warning.
What is the earthquake early warning systme?
This scale measures the strength of an earthquake.
What is the Richter scale?
Large, irregularly shaped lump made of lava that hardened before being thrown out of the volcano.
What is a volcanic block?
This type of fold occurs when rocks buckle up to form an arch-like structure.
What is an anticline?
Solid particles less than 2mm in diameter.
What is volcanic ash?
A mass of underground volcanic rock that is similar to laccolith but much larger.
What is batholith?
This major strike- slip fault exists in western California.
What is the San Andreas Fault?
This was the largest recorded earthquake in history, recorded off of the coast of Southern Chile.
Whats was a magnitude 9.5?
Lava in water solidifies almost instantly, forming rounded structures.
What is pillow lava?
Molten rock pushes up overlying rock layers without reaching the surface to form these mountains.
What are domed mountains?
Solid ejecta larger than 2mm but less than 64mm in diameter.
What is lapilli?