What happens first when a stress is applied to a rock? What two things could happen if the stress
continues to the next step? What will be an ideal response?
When a stress is applied to a rock, it undergoes elastic strain. Elastic strain is temporary; if the stress is
removed, the deformed material returns to its original shape. If the stress continues beyond the rocks'
elastic limit, the rocks will behave in one of two ways: They will either break like a brittle solid, or
they will undergo plastic strain. Rocks do not recover from plastic strain or fracture.
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Who determined that S waves were unable to survive deep passage through the Earth's interior?
a. Alfred Wegener b. Richard Oldham c. Inge Lehmann d. Francis Bacon
Economic cooperation in Western Europe at the end of World War II centered on what commodity (or commodities)?
A) telegraph and telephones B) transportation C) textiles D) computers and information technology E) coal and steel
When waves approach headlands they ________.
A. shallow and deepen simultaneously B. refract, focusing energy C. contract, releasing tidal energy D. fan out, becoming less dense E. dissipate and lose energy
Briefly explain differential correction of GPS data.
What will be an ideal response?