investigative phenomenon:
a new star is discovered. you will determine the composition of the new star using a spectrometer. the stars composition can allow you to infer its approximate age.

star spectrum
youve recorded all the values for the known elements. now, record the color and wavelength values of the brightest lines (thickest) from this spectrum, created from the light emitted from a star.

enter spectrum line information then click on the notepad to add the data.
color:
wavelength: nm
lines added: 0 of 10

Question

investigative phenomenon:
a new star is discovered. you will determine the composition of the new star using a spectrometer. the stars composition can allow you to infer its approximate age.

star spectrum
youve recorded all the values for the known elements. now, record the color and wavelength values of the brightest lines (thickest) from this spectrum, created from the light emitted from a star.

enter spectrum line information then click on the notepad to add the data.
color:
wavelength:   nm
lines added: 0 of 10

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [], "new_concepts": [ "Star Spectrum Analysis", "Wavelength Identification" ], "current_concepts": [ "Emission Spectrum", "Spectral Lines", "Spectroscopy", "Star Spectrum Analysis", "Wavelength Identification" ] } ## Identify the brightest spectral lines from the star spectrum $$ \begin{aligned} &\text{Violet/Blue region (near 400nm - 450nm):}\ &\quad \lambda_1 \approx 410\text{ nm (violet)}\ &\quad \lambda_2 \approx 434\text{ nm (blue-violet)}\ &\quad \lambda_3 \approx 447\text{ nm (blue)}\ &\text{Green/Yellow region (near 480nm - 590nm):}\ &\quad \lambda_4 \approx 486\text{ nm (blue-green)}\ &\quad \lambda_5 \approx 492\text{ nm (green)}\ &\quad \lambda_6 \approx 501\text{ nm (green)}\ &\quad \lambda_7 \approx 587\text{ nm (yellow)}\ &\text{Red region (near 650nm - 710nm):}\ &\quad \lambda_8 \approx 656\text{ nm (red)}\ &\quad \lambda_9 \approx 706\text{ nm (dark red)}\ &\quad \lambda_{10} \approx 728\text{ nm (dark red)} \end{aligned} $$ ## Match colors with corresponding wavelengths $$ \begin{aligned} &1.\text{ Violet: } 410\text{ nm}\ &2.\text{ Violet: } 434\text{ nm}\ &3.\text{ Blue: } 447\text{ nm}\ &4.\text{ Blue-Green: } 486\text{ nm}\ &5.\text{ Green: } 492\text{ nm}\ &6.\text{ Green: } 501\text{ nm}\ &7.\text{ Yellow: } 587\text{ nm}\ &8.\text{ Red: } 656\text{ nm}\ &9.\text{ Red: } 706\text{ nm}\ &10.\text{ Red: } 728\text{ nm} \end{aligned} $$ The 10 brightest spectral lines from the star spectrum with their corresponding colors and approximate wavelengths are: 1. **Violet**: 410 nm 2. **Violet**: 434 nm 3. **Blue**: 447 nm 4. **Blue-Green**: 486 nm 5. **Green**: 492 nm 6. **Green**: 501 nm 7. **Yellow**: 587 nm 8. **Red**: 656 nm 9. **Red**: 706 nm 10. **Red**: 728 nm { "subject": "Natural Science", "question_type": "Free Response", "knowledge_point": [ "Natural Science", "Physics", "Spectroscopy" ] }

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Question

Explanation:

Identify the brightest spectral lines from the star spectrum

Match colors with corresponding wavelengths

Answer: