Sinking air sometimes cools adiabatically
a. True
b. False
ANSWER: False
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Why is one way to distinguish metamorphic rocks from igneous rocks mineralogy?
A) The composition of each rock results in different texture. B) The composition of each rock results in different colors. C) Igneous rocks, since formed underground, are made up of the same elements as metamorphic rocks. D) Metamorphic rocks are primarily made up of silicates, which igneous rocks don't primarily contain when cooled from magma.
This figure shows a northwest-southeast line of islands and seamounts near Hawaii. If location 3 has the oldest rocks and Hawaii (1) has the youngest rocks, which way is the plate moving with respect to the hot spot?
A. northwest and southeast B. northwest C. southeast D. It is not moving in a consistent direction.
Which of the following accurately describes 18O/16O ratios of ice sheets?
A) During warmer periods, 18O evaporates more readily and therefore the 18O/16O ratio is higher. B) The higher the ratio of ice core 18O/16O, the cooler there temperatures because the 18O will be locked up in ice sheets. C) During periods of colder temperature, the 18O/16O ratio is higher because only the 18O isotope is being evaporated. D) During warmer periods, 16O evaporates more readily and therefore the 18O/16O ratio is significantly lower than colder periods.
What is the difference between a glacier's zone of accumulation and zone of ablation?