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Match the Physical Law or Activity Below with the Observable

Question 41

Matching

Match the physical law or activity below with the observable effect it produces.

Premises:
The wavelength of maximum intensity depends on the surface temperature of the star.
The energy output of a surface is proportional to the temperature of the surface.
Each atom absorbs or emits a set of photon wavelengths unique to its element type.
The apparent change in the wavelength of a photon from a source caused by the relative motion of the source and the observer.
An excited atom in which an electron is raised to a higher orbit.
Responses:
agitation and collision of atoms
the Doppler effect
electron motion between energy levels
Wien's Law
the Stefan-Boltzmann law

Correct Answer:

The wavelength of maximum intensity depends on the surface temperature of the star.
The energy output of a surface is proportional to the temperature of the surface.
Each atom absorbs or emits a set of photon wavelengths unique to its element type.
The apparent change in the wavelength of a photon from a source caused by the relative motion of the source and the observer.
An excited atom in which an electron is raised to a higher orbit.
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