Earthquakes
The study of earthquakes
Seismology
Magma that has reached the earth's surface
Lava
The temperature of rock increases/decreases with depth
Scientists who study the structure of the earth
Geologists
Smaller fragments of molten rock that solidify almost instantly
Tephra
A break that appears at the boundary between two moving masses of rock.
fault
A depression found at the top of a volcano
crater
Any trembling or shaking of the earth's crust
Earthquake
The boundary between the earth's crust and its mantle
Moho
Running along the edge of the Pacific Ocean, named for its many volcanoes
Ring of Fire
The point underground where an earthquake begins
focus
Holes or cracks which serve as escape vents for underground gases
Fumeroles
Earthquakes sometimes cause monstrous waves called
Tsunamis
The underwater mountain ranges
mid-oceanic ridges
A volcano that has not erupted in recorded history
Extinct
The place at ground level that is directly above the focus of an earthquake
epicenter
Dormant
Three layers of the earth
Crust, mantle, core
The process by which new soil is formed as rocks crumble and break into smaller pieces
Weathering
A volcano characterized by hot clouds of gas and dust that it expels
Plinian
The strength of an earthquake
magnitude
A volcano that produces lava fountains or fire curtains
Hawaiian
Three types of volcanos
shield, cinder cone, composite
Chemical weathering
A volcano that has erupted recently
Active