An object maintains its state of motion because it has
A) mass.
B) weight.
C) speed.
D) acceleration.
E) all of the above
A
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Geologists know that radioactive dating methods are valid
A) because they are consistent with proposed theories. B) because they have been compared with dates determined by other methods and have been found to correlate well. C) because they have been compared with dates determined by other methods and have the same exact dates. D) because the instruments always work well when performing laboratory tests.
The higher the grade of ore, the higher the environmental impact.
Answer the following statement true (T) or false (F)
Tsunamis
a. are usually generated by an underwater seismic event. b. are capable of producing sever destruction, similar in nature to that from a storm surge of a hurricane. c. are a very large wave of water. d. typically impact a very large geographical area. e. all of these answers are correct.
During periods of high solar activity, huge cloudlike structures that appear as great arches extending from the Sun are often produced. These solar features are called ________
A) the solar wind B) plages C) quasars D) spicules E) prominences