If the freezing point of ices of all types were at a much lower temperature, what change would that imply for the formation of our solar system?
A) The gas giants would have to form at a larger distance.
B) The gas giants could have formed at a closer distance.
C) There would be no change in where gas giants could form, because the freezing point of ices did not affect the formation of gas giants.
A
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Considering only the role of dark matter and keeping all other factors the same, which hypothetical universe is oldest?
A) the one with more dark matter B) the one with less dark matter C) Dark matter doesn't affect the inferred age of the universe.
The ratio of the number of protons to neutrons in the nucleus of naturally occurring isotopes tends to vary with atomic number in what manner?
a. decreases with greater atomic number b. increases with greater atomic number c. remains constant for entire range of atomic numbers d. is maximum for atomic number = 60
When light scatters from a rough surface, the law 
A. does not hold. B. holds on average, with reflected light from the surface leaving in the average direction of reflection. C. applies to each small relatively flat area of surface individually. D. applies only when the particle aspect of light predominates. E. applies only when the wavelength of light is greater than 800 nm but less than 2000 nm.
A typical source of infrared radiation is
A) magnetized particles vibrating in iron and certain other metals. B) charged particles moving within the nucleus. C) electrons moving along a metal antenna. D) thermal vibrations of molecules. E) electrons orbiting the nucleus in atoms.