Which of the following is not a form of PET, poly(ethylene terephthalate)?
A) Dacron
B) Mylar
C) Nylon-66
D) None, these are all forms of PET.
C
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Assume that man's recorded history can be stretched back to 4600 years before the present. This is approximately what fraction of geologic time?
A) one hundred-thousandth B) one millionth C) one billionth D) one ten-thousandth
An extinct volcano is one that:a
existed during a past geological period or epoch. b. has not erupted during recorded history. c. has shown no evidence of activity over recorded history. d. has not erupted during recorded history and has shown no evidence of activity over recorded history. e. all of these.
Which of the following factors makes a site near a volcano relatively more dangerous?
A. a site that is upwind from the volcano B. the nearby slopes on the volcano are gentle C. a site that is within a valley that drains the volcano D. All of these choices are correct. E. None of these choices are correct.
Instructions: Choose one answer from each pair of selections. When white light passes through a glass prism, RED | VIOLET light bends the least