How might the spectrum of an atom appear if its electrons were not restricted to particular energy levels?
A) It would appear nearly the same as it does with the energy level restrictions.
B) There would be no frequencies within the visible portion of the electromagnetic spectrum.
C) A broad spectrum of all colors would be observed.
D) The frequency of the spectral lines would change with temperature.
C
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Is this statement true or false: "Lightning never strikes twice in the same place"?
a. True b. False
The creation of many glacial lakes during the Pleistocene is labeled a(n) ________ development
A) random B) insignificant C) aeolian D) pluvial E) fluvial
Which of the following is TRUE?
A) All crowded countries are poor. B) There is no clear relationship between population density and economic development. C) All countries are increasing in population. D) Being at a crossroads location for world trade guarantees prosperity. E) The world's most crowded country is Mexico.
In middle latitudes, which of the following cloud types has the highest base?
A. cumulonimbus B. cirrostratus C. cumulus D. altostratus