Fluorescent minerals on display in museums are illuminated with
A) infrared light.
B) ultraviolet light.
C) often either or both
D) none of these
Answer: B
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Does the pressure of a gas decrease more rapidly or less rapidly when expanding adiabatically than it would when expanding isothermally?
A. More rapidly. B. Less rapidly. C. The pressure decreases at the same rate in both cases. D. The pressure increases in an adiabatic expansion. E. The pressure increases in an isothermal expansion.
What is the basic definition of a black hole?
A) any compact mass that emits no light B) a dead star that has faded from view C) any object from which the escape velocity exceeds the speed of light D) any object made from dark matter E) a dead galactic nucleus that can only be viewed in infrared
If the wavelength of a photon in vacuum is the same as the de Broglie wavelength of an electron, which one is traveling faster through space?
A) The electron because it has more mass. B) The photon because photons always travel through space faster than electrons. C) They both have the same speed.
Cumulus clouds forming from convection have flat bases that mark the _______.
What will be an ideal response?