What is the Surface along which rocks move when they pass their elastic limit and break
100
MAGNITUDE
What Measures if the energy released during and earthquake
100
SEISMIC WAVE
What is the wave generated by an earthquake
100
Sill
What is the Igneous rock feature formed when magma is squeezed into a horizontal crake between layers of rock and hardens underground
100
Crater
What is the steep-walled depression around a volcano’s vent
200
EPICENTER-
What is the Point on Earth’s surface directly above an earthquakes focus
200
Earth Quake
What is the Vibrations produced when rocks break along a fault
200
TSUNAMI
What is the Seismic sea wave that begins over an earthquake focus and can be highly destructive when it crashes on shore
200
Vent
What is the Opening where magma is forced up and flows out onto Earth’s surface as lava , forming a volcano
200
Tephra
What is the Bits of rock or solidified lava dropped from the air during an explosive volcanic eruption
300
REVERSE FAULT
What is the break in rock caused by compressive forces, where rock above the fault surface moves upward relative to the rock below the fault surface
300
LIQUEFACTION
What Occurs when wet soil acts more like a liquid during an earthquake
300
SECONDARY WAVE
What is the seismic wave that moves rock particles right angles to the direction of the wave
300
VOLCANO NECK
What is the solid igneous core of a volcano left behind after the softer cone has been eroded
300
SHIELD VOLCANO
What is gently sloping volcano formed by quiet eruptions of basaltic lava
400
Normal Fault
What is the break in rock caused by tension forces, where rock above the fault surface moves down relative to the the rock below the fault surface
400
SEISMOGRAPH
What the instrument used to register earthquake waves and record the time that each arrived
400
SURFACE WAVE
What is the seismic wave that moves rock particles up and down in a backward rolling motion and side to side in a swaying motion?
400
VOLCANO
What is the opening in the earth’s surface that erupts sulfurous gases ,ash and lava : can form at Earth’s plate boundaries where plates move apart or together and at hot spots
400
Dike
What is the igneous rock feature formed when magma is squeezed into a vertical crake between layers of rock and hardens underground
500
STRIKE-SLIP FAULT
What is the break in rock caused by shear forces, where rocks move past each other without much vertical movement
500
As rocks move past each other along a fault , their rough surfaces catch
How do Earth quakes occur ?
500
PRIMARY WAVE
What is the seismic wave that moves rock particles back -and- forth in the same direction that the wave travels
500
Hot Spot
What is the result of an unusually hot area at the boundary between earth’s mantle and core that forms volcanoes when melted rock is forced upward and breaks through the crust
500
COMPOSITE VOLCANO
What is the Volcano built by alternation explosive and quiet eruptions that produce layers of tephra and lava found mostly where earth’s plates come together and one plate sinks below the other