Minerals such as mica, quartz, and feldspar ____.
A)can occur only as igneous rocks
B)can occur only as metamorphic rocks
C)can occur as both igneous and metamorphic rocks
D)are useful index minerals for metamorphic rocks that formed from clay-rich rocks
E)all have the same chemical formula
Question 2At some Cretaceous-Paleogene boundary sites, the impact hypothesis is supported by the existence of ____.
A)high concentrations of platinum
B)shock-metamorphosed quartz grains
C)dinosaur fossils
D)the absence of dinosaur fossils
E)high concentrations of volcanic rocks
Question 3What happens when a wave enters shallow water?
A)Wavelength decreases, wave height increases, and wave speed increases.
B)Wavelength decreases, wave height decreases, and wave speed decreases.
C)Wavelength increases, wave height increases, and wave speed decreases.
D)Wavelength increases, wave height increases, and wave speed increases.
E)Wavelength decreases, wave height increases, and wave speed decreases.
Question 4Contact metamorphism ____.
A)is principally the result of high differential pressures
B)produces basalt and gabbro
C)is associated with mountain-building episodes
D)is also known as thermal metamorphism
E)occurs within a large area
Question 5At the Cretaceous-Paleogene boundary, a(n) _____ has been found.
A)guide fossil
B)missing link
C)gold anomaly
D)platinum anomaly
E)iridium anomaly
Question 6The movement of water within a wave travels ____.
A)with the wave
B)in a circular path at and just below the water surface
C)in a circular path at a depth of one-half the wavelength
D)in both a longitudinal and circular path
E)in an up and down motion to a depth of one-half the wavelength
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