What causes ocean waves to form?
a. Energy from the wavelength
b. Energy from the disturbing force
c. Energy from the restoring force
d. Energy from the Stokes drift
ANS: B
The disturbing force of a wave can vary. Capillary waves are created by wind blowing across the
ocean's surface, but other waves are generated by atmospheric changes and seismic activity.
Information can be found in the section Waves Are Classified by Their Physical Characteristics
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Primates evolved from birds as indicated by their arboreal ancestry
a. True b. False
Which fire detection method is NOT currently in use?
a. automated smoke detection systems mounted on tall towers b. light aircraft with heat detection cameras c. manned forest towers d. weather radar e. hot-air balloons with heat detection cameras
The rock pumice often floats yet the density of the rock is greater than water. Why does it float?
A) Pumice is a pyroclastic rock derived from rhyolite glass, and rhyolite glass has a lower density than water. B) Pumice is a pyroclastic rock comprised largely of open voids formed by gases released when the magma solidified as froth-like material. C) Pumice is another name for dacite, a low-density rock that floats in water. D) Pumice is a rock made of rhyolite glass that erupts into water, which traps water in voids and makes the material less dense than water.
Which of the following is most resistant to both chemical and physical weathering?
a. a granite b. quartz c. clay minerals d. a limestone