Which horizon may accumulate minerals that are not present in the parent material?
A) A horizon
B) O horizon
C) E horizon
D) B horizon
Answer: D
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Which dashed line in this figure would be the wave base?
A. 1 B. 2 C. 3 D. 1 and 2 E. 2 and 3
The planets
A. were ejected from the sun as molten matter early in its history. B. formed from the same cloud of gas and dust as the sun. C. formed billions of years after the sun. D. formed in different places in space and were drawn to the sun by gravity.
The ability of a mineral to transmit both light and an image in the mineral is described as ________
A) opaque B) transparent C) translucent D) cloudy
(a) Two minerals that crystallize from common magmas are olivine (Mg2SiO4) and quartz (SiO2)
If a magma liquid is getting enriched in Si and depleted in Mg as it cools and starts to crystallize, which of these minerals crystallizes first? Hint: use the mineral formulas to help explain your answer. a) Olivine crystallizes first b) Quartz crystallizes first (b) Explain your reasoning behind the answer you selected: