If a rock is slowly heated to 1200°C, the first minerals to melt would be quartz and potassium feldspar.
Answer the following statement true (T) or false (F)
True
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Drops of water that drip from a leaky faucet become
A. farther apart as they fall. B. closer together as they fall. C. a fixed distance apart as they fall. D. none of the above
Since the turn of this century, CO2 in the atmosphere has:a
been increasing in concentration. b. been decreasing in concentration. c. remained at about the same concentration from year to year. d. disappeared entirely.
Mount Pelee on the Island of Martinique erupted in the early 20th century. Why is this eruption famous?
A) It was a small cinder cone on an island that erupted in a sugar cane field. B) The volcano produced a pyroclastic flow that swept down the mountain, killing thousands of people. C) It was the first caldera forming eruption observed by modern scientists. D) It produced a major lateral blast that leveled a city, killing many people.
Abyssal hills are single, rounded domes extending at least 3 km above the deep-sea floor.
Answer the following statement true (T) or false (F)