Light Spectra and Spectral Analysis Worksheet
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Plymouth State University *
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2930
Subject
Astronomy
Date
Jan 9, 2024
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docx
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Astronomy
Light Spectra and Spectral Analysis Worksheet (50 points)
Answer:
In the first figure in figure two is H and Na
Answer:
In the second figure in figure two is H, He, and Li
2.
What do the dark lines in Figure 3 indicate?
Answer:
3.
For each element in the table below, determine which letter (along the top of the spectrum) aligns with each
wavelength. List the color at the letter/wavelength in the final column.
Element/Wavelength
Letter
Color
Iron (527 nm)
E
Light green
Iron (516 nm)
b
teal
Iron (495 nm)
c
Light blue
Iron (466 nm)
d
Purple
Iron (438 nm)
e
Purple
Iron (430 nm)
G
Purple
Sodium (589 nm)
D
Orange
Calcium (396 nm)
H
Black
Calcium (393 nm)
K
Black
Hydrogen (656 nm)
C
Red
Hydrogen (486 nm)
F
Light purple
Hydrogen (410 nm)
h
Dark purple
Helium (587 nm)
D
Light orange
4.
Which pair of bold
spectral lines are the closest together in the spectrum? List the letters and approximate
wavelengths. Which two elements are aligned with these spectral lines?
Answer:
Lines K 393 and H 396.
Calcium and Calcium
5.
Which element in the sun releases the most energy? (Hint: use the relationships between wavelength, frequency
and energy)
Answer:
Hydrogen
6.
Which element in the sun releases the least amount of energy? (Hint: use the relationships between wavelength,
frequency and energy)
Answer: Calcium
7.
Which element in the sun has the highest frequency of energy? (Hint: use the relationships between wavelength,
frequency and energy)
Answer:
Ultra violet
8.
Which element in the sun has the lowest frequency of energy? (Hint: use the relationships between wavelength,
frequency and energy)
Answer: Red
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