Define and distinguish between the following: epicenter, focus, aftershock
What will be an ideal response?
The subsurface area where the motion of seismic waves is initiated along a fault plane is the focus (or hypocenter). The area at the surface directly above the focus is the epicenter. An aftershock occurs after the main shock, sharing the same general area of the epicenter.
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When catching a fast-moving baseball with your bare hand, you extend your hand forward to allow the ball to ride backward with your hand. The catching force is thereby reduced because the
A. time of the catch is decreased. B. relative velocity is less. C. time of catch is increased. D. relative velocity is greater.
What are deserts, and where are they located on Earth? What will be an ideal response?
Reducing population growth rates in poor countries can be accomplished by ________
A) reproducing beyond replacement fertility B) economic disasters C) valuing the birth of a son D) education of women E) illness in infants
________ is an example of a secondary sector activity
A) Banking B) Farming C) Manufacturing D) Secondary education E) Professional football