Match the terms with the definitions 1. ground state
2. radial motion
3. spectral classification
5. spectroscopy
6. spectrum
7. transverse motion

a. motion across the line of sight of an observer
b. motion away from or toward an observer
c. the study of the way in which atoms absorb and emit light
d. the normal low energy state of electrons in atoms
e. machine that separates and analyzes incoming light and produces a graphical or color output of the result
f. a letter designation indicating the temperature of a star as determined by spectral evidence
g. an ordered distribution of wavelengths and frequencies of energy