Dust-like particles of pulverized rock blown into the air ASH
Most lava flows are so __ that people can outrun them SLOW
An eruption may __ large amounts of matter into the air EJECT
A fumarole is a vent that releases steam and volcanic __ GASES
Mount Etna in __ is one of the most studied and famous volcanoes ITALY
Mount Fuji in __ is one of the world's most climbed volcanoes JAPAN
Molten rock from the Earth's interior that has moved into the crust MAGMA
The most common volcanic emission, even from dormant volcanoes STEAM
Hawaii's Mount Kilauea is one of the world's most __ and famous ACTIVE
A caldera is the basin-shaped __ at the top of a volcano CRATER
Crater Lake in __ is the remains of a cataclysmic eruption OREGON
The Roman God of the Fire for which volcanoes are named VULCAN
Mount St. Helens is only one of several volcanoes in the __ Range CASCADE
A volcano that is "sleeping" or has not erupted in many years DORMANT
A volcano that is never likely to erupt again EXTINCT
If Mount __ near Seattle/Tacoma erupted, thousands would be in danger RAINIER
Volcanic earthquakes are measured on the __ scale RICHTER
Lava is magma that has reached the __ in an eruption SURFACE
An event where material and gases are released from a volcano ERUPTION
If scientists think a volcano is dangerous, they may __ nearby people EVACUATE
Over 36,000 people were killed in the eruption of __ in 1883 KRAKATAU
An active volcano, and the highest point in the Hawaiian Islands MAUNAKEA
A Lahar or __ is a flowing mixture of water and volcanic ash MUDSLIDE
The cities of Pompeii and Herculaneum were destroyed by __ in 79 A.D. VESUVIUS
The theory of plate __ describes the motion of the Earth's crust TECTONICS
The __ __ __ is a system of volcanoes surrounding the Pacific Ocean RINGOFFIRE
Mount __ __ erupted on May 18, 1980, killing 57 people SAINTHELENS
Instrument for measuring the movement of the Earth's crust SEISMOGRAPH