The blue color of distant mountains is due primarily to ____
a. diffraction of light
b. scattering of light
c. refraction of light
d. emission of light
e. absorption of light
ANSWER: b
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Indicate whether the statement is true or false
How many oxide ions (O-2 ) are needed to balance the positive charge of a titanium ion (Ti+4)?
A) 2 B) 1 C) 3 D) 4 E) 6
If a rock is metamorphosed but does not contain foliation or lineation, what has probably happened to the rock?
A. It was only flattened during metamorphism. B. It has been deformed but not metamorphosed. C. It has not been metamorphosed. D. It has been flattened and stretched while it was metamorphosed. E. It has been metamorphosed but not deformed.
As they migrate, meandering streams erode their out outside banks, often forming a narrow neck of land that eventually erodes through and forms a ________ and the stream becomes ________
A) cutoff; straighter B) meander scar; narrower C) cutback; more sinuous D) point bar; wider