If the recurrence interval of an event is 50 years, recurring events ____.?
a. ?will occur exactly every 50 years
b. ?will never occur within a one year time period
c. ?can occur anytime, but are likely to occur within 50 years
d. ?will never occur if there has not been an event for 50 years
e. ?will only occur once during any given individual's lifetime
ANSWER: c
ANSWER: c
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What type of mechanical weathering occurs because water increases in volume when it freezes?
a. Frost wedging b. Polar areas c. Polar region d. Frost action
Thrusting a bar magnet at the same speed into a coil having twice the number of loops, the induced voltage is
A. half. B. the same, no different. C. four times as much. D. twice as much.
Greenwich mean time (GMT) is a system of
A) coordinating rules for what time should appear on a clock, around the world. B) determining what years should be considered leap years and which should not. C) identifying the phase of the lunar cycle. D) determining when daylight savings time should go into effect.
Volcanism creates mountains that are
A. varied in size from small cinder cones to large shield and composite volcanoes. B. sometimes local and not accompanied by regional increases in crustal thickness. C. formed of piled volcanic material, such as scoria, ash, lava flows, debris flows, and mudslides. D. All of these are types of mountains created by volcanism.