What's Shakin, Bacon?
Any trembling or shaking of the Earth's crust
Earthquake
The strength of an earthquake
Magnitude
A volcano that produces lava fountains or fire curtains
Hawaiian
Scientists who study the structure of the Earth
Geologists
This allows molten rock and hot gases to escape from within the Earth
Volcano
The study of earthquakes
Seismology
A depression found at the top of a volcano
Crater
A volcano that has erupted recently
Active
The underwater mountain ranges
Mid-Oceanic Ridges
Running along the edge of the Pacific Ocean, this is named for its many volcanoes
Ring of Fire
A break that appears at the boundary between two moving masses of rock
Fault
Monstrous wave sometimes caused by an earthquake
Tsunami
A volcano that has not erupted in recorded history
Extinct
The temperature of rocks ________________ with depth
Increases
Magma that has reached the Earth's surface
Lava
The point underground where an earthquake begins
Focus
The process by which new soil is formed as rocks crumble and break in to smaller pieces
Weathering
A volcano that has been active at some time in recorded history, but has not had a recent eruption
Dormant
The boundary between Earth's crust and its mantle
Mohorovicic Discontinuity (Moho)
Smaller fragments of molten rock that solidify almost instantly
Tephra
The place at ground level that is directly above the focus of an earthquake
Epicenter
Created when trapped gases blast through the Earth's surface
Vent
A volcano characterized by hot clouds of gas and dust that it expels
Plinian
This occurs when natural acids slowly eat into a rock, breaking it apart
Chemical weathering
Holes or cracks which serve as escape vents for underground gases
Fumeroles