Compared with oceanic crust, continental crust is very buoyant because it is
A) composed of basaltic rock that contains air bubbles from successive lava flows.
B) composed of granitic rocks whereas oceanic crust is composed of basaltic rocks.
C) thinner and forms a thin upper skin on the oceanic crust below.
D) very young and fresh.
Answer: B
You might also like to view...
An innovative physics professor conducts laboratory exercises in the college swimming pool. Suppose that one exercise was the measurement of the degree of polarization by bouncing laser light off a surface of glass. If the glass used has an index of refraction of 1.52, at what angle of incidence will the reflected beam be perfectly polarized? It will help to recall that the index of refraction of water is 1.33.
A. 
B. 
C. 
D. 
Pennies used to be made of copper, but now they are made of copper-coated zinc. If one were to do a precise calorimetry experiment to determine the specific heat of the new pennies, what would be the result to be?
a. It would be that of copper since copper is on the outside. b. It would be that of zinc since zinc is in the center. c. It would be the sum of the copper and zinc specific heats. d. It would be between that of copper and that of zinc, depending on coating thickness.
_________ are neutron stars that have magnetic fields 100 times stronger than the average neutron star
a. Hypernovae b. Collapsars c. Pulsars d. Kerr singularities e. Magnetars
All classes of binary stars yield the basic information on stellar ________
Fill in the blank(s) with correct word