What is the symbol for the element whose atoms have 3 protons each?
a. Mn
b. Li
c. Sr
d. Li
e. Cm
b
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At about the position of the Earth, in the early solar nebula, the temperature was about 1,000 K, cool enough for ________ to condense out of the gas
Fill in the blank(s) with correct word
In science, words always
a. have the same meaning as common English words. b. mean very vague things, so scientists can hide their ignorance. c. have no reason for being; they must just be memorized. d. are used faddishly by scientists and the public. e. have specific meanings shared worldwide by all scientists.
Which of the following is a unit of energy:
a. watt b. ft—lb/sec c. newton/sec. d. horsepower e. joule
Point bars typically form
A) on the inside bend of a curved stream channel. B) on the outside bend of a curved stream channel. C) in the middle of a straight stream channel. D) in the middle of a curved stream channel.