Free Printable WorksheetScienceGrade 7Science CurriculumMS-LS4-1

7.52 Fossil Record and Patterns Over Time Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Grade 7 Science worksheet provides structured practice on 7.52 Fossil Record and Patterns Over Time. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Fossil Record and Patterns Over Time - Which trend in the fossil record best supports a claim about change over time? (NGSS MS‑LS4‑1)

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

Grade 7

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 7.52 Fossil Record and Patterns Over Time skill assessments:

Problem 1Difficulty: Mastery

Region A and Region B both show older marine reptile fossils, then fewer species near the same time interval, and later diverse marine mammal fossils. Which claim is strongest?

AA broad fossil pattern shows extinction in one group and later diversification of another group over time.

BThe two regions cannot be compared because they are separate places.

CThe later marine mammal fossils must be older than the marine reptile fossils.

DThe pattern proves every marine reptile changed directly into a marine mammal.

Solution & Explanation:Matching sequences in two regions provide strong evidence for a broad pattern of extinction followed by later diversification of a different group.

Problem 2Difficulty: Mastery

A newly found fossil has the jaw shape of an older species but the limb bones of a younger species. In the context of an age-ordered fossil sequence, what is the best interpretation?

AIt proves the older and younger species are unrelated.

BIt shows limb bones and jaws cannot be compared.

CIt means the fossil sequence must be arranged backward.

DIt may be an intermediate form that strengthens evidence for change over time.

Solution & Explanation:A fossil with a mix of older and younger features is exactly the kind of pattern scientists look for when testing claims about change over time.

Problem 3Difficulty: Mastery

Scientists think a shell lineage evolved thicker shells over time. Which follow-up investigation would best test that claim?

AStudy a single unrelated fossil group from one layer.

BIgnore the ages of the fossil layers and compare shell colors instead.

CCollect shell thickness data from more dated layers and more locations to see whether the trend repeats.

DMeasure only one modern shell from a beach.

Solution & Explanation:A strong test checks whether the same trait trend appears repeatedly across more ages and more places.

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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 Grade 7 Science students. It aligns with educational standard MS-LS4-1 (Primary standard selected for prompt fields in this prompt cell: NGSS MS-LS4-1. Skill statement in this prompt cell: Which trend in the fossil record best supports a claim about change over time? Associated standards listed with this skill in this prompt cell: NGSS MS-LS4-1. Use this prompt-provided wording as the supporting standard description for this workflow.).