In what way could sea level rise? Is this likely to happen in the future? Why or why not?
What will be an ideal response?
Answer: A rise in sea level could be caused by an increase in spreading rates, such as what occurred during the Paleozoic, or if the polar ice caps were to melt. Although the Mid-Atlantic ridge continues to spread, it is unlikely that our generation, or the one after ours, will witness a rise in sea level due to a high stand of the asthenosphere (as such changes are slow to manifest). A more probable cause of sea level rise is global warming. In either case, it is difficult to predict the future.
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RR Lyrae stars are in the constellation ___________
Fill in the blank(s) with correct word
What observation has prompted astronomers to ponder the possible existence of dark energy?
a. Discovery of quasars b. Discovery of superclusters c. Supernovae appear fainter than expected at large redshifts. d. Uniform nature of the cosmic microwave background (CMB).
A hollow cylindrical (inner radius = 1.0 mm, outer radius = 3.0 mm) conductor carries a current of 80 A parallel to its axis. This current is uniformly distributed over a cross section of the conductor. Determine the magnitude of the magnetic field at a point that is 2.0 mm from the axis of the conductor
a. 8.0 mT b. 3.0 mT c. 5.3 mT d. 16 mT e. 1.2 mT
Particles that do not interact via the strong force but do interact via the weak nuclear force (and presumably by the much weaker gravitation force) are called
A) mesons. B) nucleons. C) hadrons. D) baryons. E) leptons.