Free Printable WorksheetScienceGrade 9Science CurriculumNGSS HS-ESS1-2, HS-PS4-1, HS-PS4-3

9.148 Galaxies, Light Spectra, and Redshift Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Physical Science with Earth and Science Science worksheet provides structured practice on 9.148 Galaxies, Light Spectra, and Redshift. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Galaxies, Light Spectra, and Redshift: MCQ focus: interpret spectra, absorption/emission lines, redshift, and galaxy motion as evidence for an expanding universe. Aligned to NGSS high school Physical Science, Earth and Space Science, and Engineering Design; NRC/DCI; SEP/CCC; CCSS math/literacy connections; selected CA NGSS, NYSSLS, Florida CPALMS, and Texas TEKS references NGSS HS-ESS1-2, HS-PS4-1, HS-PS4-3 - NGSS-aligned Galaxies, Light Spectra, and Redshift: NGSS: HS-ESS1-2; HS-PS4-1; HS-PS4-3; NRC/DCI: ESS1.A; PS4.A-B; SEP/CCC: Analyzing data / Patterns; Common: RST.9-10.7; HSN-Q.A; State refs: CA/NYSSLS HS-ESS1/HS-PS4; FL SC.912.E.5 and SC.912.P.10; TX Astronomy.

Whether you are an educator preparing classroom handouts, a tutor reinforcing weekly topics, or a parent supporting homeschool learning, this printable resource gives students the deliberate practice required to achieve subject fluency and master state standards.

Grade

Physical Science with Earth and Science

Subject

Science

Domain

Science Curriculum

Formats

PDF & DOCX

Sample Practice Problems

Preview the types of problems and questions covered in this worksheet

Below are sample questions representative of the exercises included on this worksheet and related 9.148 Galaxies, Light Spectra, and Redshift skill assessments:

Problem 1Difficulty: Mastery

A class summarizes its evidence: spectral line patterns identify elements, line shifts show redshift, and larger redshifts generally occur for more distant galaxies. What conclusion is best supported?

ARedshift is unrelated to wave properties.

BThe universe must have Earth at its exact center.

CSpectra provide evidence that galaxies are receding in a way consistent with an expanding universe.

DSpectra prove that all galaxies have no elements.

Solution & Explanation:The summary connects spectral fingerprints, wavelength shifts, and the redshift-distance pattern. Together, these support the expanding-universe interpretation.

Problem 2Difficulty: Mastery

Which data set would best test the claim that distant galaxies generally recede faster?

ADistances and spectral redshifts for many galaxies measured with calibrated spectra.

BOne photograph of one galaxy with no wavelength scale.

CThe masses of planets in the solar system only.

DA list of galaxy names with no distances or spectra.

Solution & Explanation:Testing a redshift-distance claim requires both distance information and spectral shift measurements for many galaxies.

Problem 3Difficulty: Mastery

A student shifts a lab spectrum until one line matches a galaxy line, then ignores two other lines that do not match. What is the main problem?

AA valid identification should match the whole line pattern at one consistent shift.

BMatching one line is always stronger than matching a pattern.

CSpectral lines cannot be shifted together.

DOther lines should be ignored because they make spectra less reliable.

Solution & Explanation:Spectral analysis depends on patterns. If only one line matches and others do not, the proposed element or redshift is questionable.

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Frequently Asked Questions

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QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Physical Science with Earth and Science Science students. It aligns with educational standard NGSS HS-ESS1-2, HS-PS4-1, HS-PS4-3 (NGSS: HS-ESS1-2; HS-PS4-1; HS-PS4-3; NRC/DCI: ESS1.A; PS4.A-B; SEP/CCC: Analyzing data / Patterns; Common: RST.9-10.7; HSN-Q.A; State refs: CA/NYSSLS HS-ESS1/HS-PS4; FL SC.912.E.5 and SC.912.P.10; TX Astronomy.).