Buoyancy is the ability of an object to float in a fluid by ____
A) weighing less than the water surrounding it
B) displacing a volume of water equal in weight to its own weight
C) having a lot of air within its body
D) displacing a volume of water which weighs slightly less than its own weight
B
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The sail-like fin of the pelycosaur may have served as all of the following except
a. sexual display. d. a means to look more ferocious. b. a means of locomotion. e. a thermoregulatory device. c. a means of protection.
On June 21, which of the following locations has the longest day?
a. Omaha, Nebraska (41?N) b. Murmansk, USSR (69?N) c. Montevideo, Uruguay (35?S) d. Kontiala, Mali (12.5?N)
What can changes in the composition of volcanic gases indicate?
A. Magma rising toward the surface B. Whether or not volcanic mudflows can occur C. Where valuable mineral resources are located D. How much lava will be produced
The International Court of Justice is located in
A. London B. Paris C. Brussels D. The Hague