This figure has rock units and geologic features that are assigned letters that are not in any particular order. From the geologic relations, what is the oldest unit or feature of those listed below?
A) The canyon (feature N)
B) Lava flow (unit L)
C) Dike (unit D)
D) Fault (feature F)
E) Old river channels (feature R)
D) Fault (feature F)
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A water-filled paper cup held in a flame will not catch fire because
A. the paper cup cannot become appreciably hotter than the water it contains. B. the inside of the paper is wet. C. paper is a good conductor of heat. D. water is an excellent conductor of heat.
The Sun tends to bloat outward by nuclear fusion, and contract due to
A) gravitation. B) nuclear fission. C) mass decrease. D) its relatively slow spin. E) reduced gaseous pressures.
The Ice Age, which began about 2.5 million years ago, is also known as the ____
a. Pleistocene epoch b. Holocene epoch c. Bölling-Alleröd period d. Younger Dryas e. Little Ice Age
The restoration of Nonsuch Island in Bermuda has been very successful, particularly in preserving the
A. Forest lynx B. Bermuda cedar C. Pine martin D. Bermuda cahow E. Long-tailed tropic bird