Volcanoes 1
Molten earth material found underground
Magma
Molten earth material found above ground
Lava
A volcano that has not erupted for a long time, but may erupt again one day.
What is a dormant volcano?
A point or location on Earth's surface where an earthquake occurred
Epicenter
The number describing the strength of an earthquake
Magnitude
describes a Rayleigh wave
What is rolling like an ocean wave?
A flash flood that originates from glaciers on a volcano
Lahar
The name of the cloud of ash and debris that is very hot and moves quickly down a volcano
Pyroclastic flow
Volcanic fog
Vog
A crack on the Earth’s surface caused by tectonic plate movement
Fault
Lithosphere
What is the crust and upper mantle?
a Love wave
What is moving back and forth like a snake?
a volcano that has erupted at some point during a recorded time period and is expected to erupt again
What is an active volcano?
What type of plate boundary are you most likely to find massive earthquakes and volcanoes?
Convergent
Extinct Volcano
What is A volcano that has not erupted for thousands of years and probably will not erupt again.
How and why do earthquakes happen?
Tectonic plates are moving past each other and get stuck, building up pressure until they slip and an immense amount of energy is released
What is the name of the scientific device we use to measure earthquake strength?
Seismometer (or seismograph)
Normal fault
What is a fault where a section of rock may FALL BETWEEN the separating rocks
Hot spots
What are places where a pool of intensely hot magma rises toward the surface?
volcanoes that form a ring in the Pacific Ocean; 2/3 of all volcanoes are found here
What is the Ring of Fire?
a type of rock that forms from the cooling of molten rock at or below the surface
What is igneous rock?
the first, fastest-moving waves to be detected from an earthquake
What are P-waves?
What number on the Moment Magnitude Scale (MMS) would be considered a MASSIVE earthquake?
8 and above
Reverse fault
What kind of fault causes rocks to push together until they force a section of rock upward?
Type of volcano formed from layers of magma/eruptions.
What is a Composite volcano?
The volcanos in Hawaii and Iceland are examples of this
What is a strombolian volcano?
Extinct volcanoes NEVER erupt
What is FALSE?!
Yes, an "extinct" volcano can erupt again, although it is rare, because the classification is based on current understanding and magma supply, and magma can re-enter the system. While truly extinct volcanoes, like those in the Eastern U.S. that lack tectonic features, are unlikely to reawaken, others considered extinct could pose future hazards if magma is found to still be present beneath them, such as the Ciomadul volcano in Romania.
Beginning point of an earthquake
What is the focus?
What type of wave caused by an earthquake can’t travel through liquid?
S-waves
Slip/strike fault
What kind of fault a fault that occurs as rocks move HORIZONTALLY past each other