Day 68: Analyzing Spectra

emission_spec

Astronomy: (I tried taking pictures of spectra, but the low lighting didn’t produce good photos.)

Lab 18: Analyzing Spectra

  1. Continuous Spectrum
    Look at incandescent bulb w/ spectroscope.
    Draw what you see and describe in words.
    Why is this called a continuous spectrum?
  2. Absorption Spectrum
    Look at the pink sheet w/ spectroscope.
    Draw what you see and describe in words.
    Why is this called an absorption spectrum?
  3. Emission Spectrum
    Look at the gas tube w/ spectroscope.
    Draw what you see and describe in words.
    Why is this called an emission spectrum?
  4. Element Identification
    Look at gas tubes A, B, & C w/ spectroscope. Draw what you see.
    Use spectra provided (pictured above) to identify each gas.
  5. Solar Spectrum
    Go to http://v.gd/solarspectrum
    Use the spectra provided to determine which elements listed are in the solar spectrum.

The “pink sheet” that produces an absorption spectrum is the pink plastic from a “neon glow slate.” I got mine years ago, but it seems similar to this one that Dollar Tree is selling. It absorbs yellow light, so when looking at white light passing through it, you see a continuous spectrum with the yellow part missing.

119967

NGSS Science and Engineering Practices:
#4. Analyzing and interpreting data

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About Frank Noschese

HS Physics Teacher constantly questioning my teaching.

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