Which portion of the electromagnetic spectrum is used to identify fluorescent minerals?
a. ultraviolet light
b. X rays
c. infrared waves
d. gamma rays
Ans: a. ultraviolet light
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The temperature variations of the cosmic microwave background observed by Planck agrees well with our model predictions. This provides persuasive evidence in favor of what?
A) both the Big Bang and inflation B) only the Big Bang, but not inflation C) not the Big Bang, but inflation D) neither the Big Bang nor inflation
Which of the following locations has the smallest (in magnitude) magnetic declination?
a. Washington state b. the South Carolina – Georgia border c. the San Francisco – Oakland area d. western Colorado
You could swallow a capsule of germanium, Ge (atomic number 32), without significant ill effects. If a proton were added to each germanium nucleus, however, you would not want to swallow the capsule because the germanium would
A) become arsenic. B) become radioactive. C) expand and likely lodge in your throat. D) have a change in flavor.
If the voltage across the ends of a wire increases, the current in the wire __________
Fill in the blank(s) with correct word