Free Printable WorksheetScienceGrade 12Science Curriculum12.137

12.137 Astronomy and Cosmology Connections Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Physics Science worksheet provides structured practice on 12.137 Astronomy and Cosmology Connections. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Astronomy and Cosmology Connections: Interpret redshift, spectra, orbital data, or radiation evidence connected to stars, galaxies, and cosmic history. Aligned to NGSS, CCSS Literacy and Mathematics, AP Physics, and selected state frameworks 12.137 - Astronomy and Cosmology Connections: Corresponding standards/alignment: NGSS HS-PS1-8, HS-PS3, HS-PS4-5, HS-ESS1 connections, HS-ETS1; CCSS RST.11-12.1/7/9, WHST.11-12.1/2/7; AP Physics 2 modern physics; AP Physics C enrichment as appropriate; TX TEKS Physics §112.45(c); FL SC.912.P.8, SC.912.P.10; VA PH.8; MA/CA/NY HS-PS1/PS4/ESS1/ETS1.

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

Physics

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 12.137 Astronomy and Cosmology Connections skill assessments:

Problem 1Difficulty: Mastery

A data summary lists: galaxy spectral lines are redshifted, spiral galaxy rotation curves are flat, and the CMB has a near-blackbody microwave spectrum. Which pairing is best?

ARedshift: exoplanet radius only; flat rotation curves: chemical abundance only; CMB blackbody: circuit resistance only.

BRedshift: proof galaxies approach us; flat rotation curves: no gravity; CMB blackbody: no photons.

CRedshift: only telescope color error; flat rotation curves: star temperature only; CMB blackbody: planet transit timing only.

DRedshift: expansion evidence; flat rotation curves: unseen mass evidence; CMB blackbody: hot early-universe evidence.

Solution & Explanation:Each observation supports a different model connection: redshift relates to expansion, rotation curves to mass distribution, and CMB blackbody radiation to a hot dense early universe.

Problem 2Difficulty: Mastery

CMB photons were released when the universe was about 1100 times smaller in scale factor than today. How does the energy of a typical CMB photon today compare with then?

AIt is about 1100 times larger today.

BIt is exactly unchanged because photons never change energy.

CIt is about 1/1100 as large today.

DIt is zero because microwaves have no energy.

Solution & Explanation:Photon wavelength stretches with the scale factor, and photon energy is inversely proportional to wavelength. If wavelengths stretch by about 1100, photon energies decrease by about 1100.

Problem 3Difficulty: Mastery

Which observation is the clearest direct evidence for large-scale cosmic expansion?

AOne galaxy looking red in a photograph.

BA systematic relationship between galaxy redshift and distance over many galaxies.

COne planet having an elliptical orbit.

DA single star changing brightness during one night.

Solution & Explanation:Large-scale expansion is supported by a pattern across many galaxies: redshift increases with distance. A single color or one local orbit is not sufficient.

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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 Physics Science students. It aligns with educational standard 12.137 (Corresponding standards/alignment: NGSS HS-PS1-8, HS-PS3, HS-PS4-5, HS-ESS1 connections, HS-ETS1; CCSS RST.11-12.1/7/9, WHST.11-12.1/2/7; AP Physics 2 modern physics; AP Physics C enrichment as appropriate; TX TEKS Physics §112.45(c); FL SC.912.P.8, SC.912.P.10; VA PH.8; MA/CA/NY HS-PS1/PS4/ESS1/ETS1.).