[4.0 points.] An absorption spectrum is caused by:
A. the Doppler effect.
B. hot, agitated electrons and atoms.
C. electrons moving to lower energy orbitals.
D. blackbody radiation passing through diffuse, cool gas atoms.
Answer:D
[4.0 points.] An absorption spectrum is caused by:
A. the Doppler effect. B. hot, agitated electrons and atoms. C. electrons moving to lower energy orbitals. D. blackbody radiation passing through diffuse, cool gas atoms.