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Chap 11 (1)

Prentice Hall Chapter 11-1, 11-2, 11-3 vocabulary review

QuestionAnswer
Large pieces of earth plates
Theory based on evidence that plates are moving slowly and constantly. Theory of Plate Tectonics
Supercontinent Pangea
Cracks between the plates plate boundaries
force that acts on rock to change its shape or volume stress
stress that pushes a mass of rock in two opposite directions shearing
stress that squeezes rock until it folds or breaks compression
stress force that pulls on the crust, stretching rock to become thinner tension
shaking and trembling that results from the movement of rock beneath Earth's surface earthquake
break in the Earth's crust where slabs of crust pass by each other fault
Shearing creates this type of fault slip-strike
Compression produces this type of fault reverse
Tension forces in Earth's crust produce this type of fault normal
Half the fault that lies above the fault hanging wall
Half the fault that lies below the fault footwall
bends in the rock folds
large area of flat land elevated high above sea level plateau
point beneath surface where rock is under stress and breaks focus
point on surface directly above the focus epicenter
first waves (compressional similar to a slinky) p waves
secondary waves (move perpendicular to direction of movement) s waves
move slower, but produce severe ground movements (making the ground roll like a water wave) surface waves
Rates earthquakes according to intensity Mercalli scale
a rating of the size of seismic waves measured by a seismograph Richter scale
Scale used today by geologists Moment Magnitude Scale
Created by: science6th
Popular Earth Science sets

 

 



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