Volcano and plate tectonics test study guide answers

Meteorologist
A scientist who studies weather(atmosphere).

Thermometer
A tool used to measure temperature

Seismologist
A scientist who studies earthquakes

Geologist
A scientist who studies the earth

Anemometer
A tool used to measure wind speed or direction

Crust
Outer layer of the earth

Mantle
Second layer of the earth, part of the lithosphere

Outer core
Third layer of the earth made of molten iron

Inner core
4th and final layer of the earth made of solid nickel and iron

Asthenosphere
Taffy like portion of the earth which the plates float on

Pillow lava
Mounds that form when lava erupts underwater or empties into the ocean

Magma
Molten rock below the earth’s surface

Lava
Molten rock above the earth’s surface

Shield volcano
Gentle slope, eruptions of less viscous lava

Composite volcano
Formed from alternating eruptions of lava and ash

Cinder cone volcano
Smallest type made from thickened lava and rock fragments ejected from vent

Lahar
A mudflow that occurs when rain falls through clouds of ash or when rivers become choked with falling volcanic debris

Mudflow
Powerful rivers of mud or debris composed of volcanic rock fragments, rocky debris, and water

Viscosity
The tendency to resist flow

Conduit
A tube-like passageway that magma travels through

Caldera
A LARGE, STEEP SIDED, CIRCULAR VOLCANIC DEPRESSION THAT FORMS WHEN MAGMA RETREATS TO ERUPT FROM A SHALLOW UNDERGROUND MAGMA CHAMBER

Crater
A small bowl shaped hole that forms when rock explodes from a volcano during an eruption

Lava dome
A dome that forms at the top of a volcano when thick, cold magma emerges from the volcanic opening

Crater

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