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science test ch 3

QuestionAnswer
Seismograph Records magnitude of earthquake and time seismic waves arrive.
P-waves fastest push-pull
S-waves side-to-side slower than P-waves
Surface waves push-pull AND side-to-side most damaging because they're on the surface
Factors that affect strain composition temperature pressure
Types of permanent strain brittle ductile
Folds a form of ductile strain where rock layers bend, normally a result of compression. most easily seen where flat layers of rock were compressed/squeezed inward. vary in size
Types of folds Anticlines are arched upwards Synclines are arched downwards monoclines are where both limbs horizontal or close too
Ways heat travels Radiation Conduction convection
Focus Point of origin
Divergent Boundaries where plates are pulling away from each other
Convergent Boundaries where 2 plates come together
Hot Spots a long-lived source of magma within the asthenosphere and below the moving lithospheric plate
Unitormitarianism the belief that processes that happen today are similar to processes that happened throughout history
Correlation When geologists try to match rocks in different locations to see if they were made at the same time or under similar conditions.
Index Fossils remains of organisms that existed for a brief time but over a large area
1/2 Life the time it takes for 1/2 the elements in a radioactive sample to change into decay product.
Superposition rocks at the bottom of undisturbed are the oldest
Original Horizontality Sedimentary layers were horizontal when they were deposited.
Crosscutting Relationships Intrusions of magma are always younger than the rocks they invade.
Created by: M0l
 

 



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