Interpreting Spectra Worksheet
Grade 11 Science worksheet focusing on the principles and applications of interpreting different types of spectra, including absorption and emission spectra.
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Interpreting Spectra
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Read each question carefully and provide clear, concise answers. Show all your work where applicable. Refer to the provided diagrams and information to help you answer the questions.
1. Which type of spectrum is produced when light from a hot, dense source passes through a cooler, less dense gas?
Emission spectrum
Continuous spectrum
Absorption spectrum
Line spectrum
2. What information can be determined about a star by analyzing its absorption spectrum?
Its exact distance from Earth
Its chemical composition and temperature
Its age and future lifespan
Its magnetic field strength
1. An emission spectrum consists of bright lines on a dark background, indicating that specific of light are being emitted by the source.
2. The Doppler effect observable in spectral lines can be used to determine the motion of celestial objects.
3. Each element has a unique spectral fingerprint because of its distinct electron levels.
1. Briefly explain the difference between a continuous spectrum and an emission spectrum.
1. The presence of dark lines in an absorption spectrum indicates that those specific wavelengths of light have been absorbed by the intervening gas.
True
False
2. A hot, dense object will produce a line emission spectrum.
True
False
Observe the diagram of a spectrometer below:
Using the diagram as a reference, describe the primary function of a spectrometer in scientific research.
Match the spectral phenomenon with its description.
1. Redshift
a. Light emitted by a hot, dense object
2. Blueshift
b. Shift of spectral lines towards longer wavelengths
3. Continuous Spectrum
c. Shift of spectral lines towards shorter wavelengths
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