Free Printable WorksheetScienceGrade 7Science CurriculumSCI.7.8

7.8 Constructing Explanations with Claim, Evidence, and Reasoning Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Grade 7 Science worksheet provides structured practice on 7.8 Constructing Explanations with Claim, Evidence, and Reasoning. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Constructing Explanations with Claim, Evidence, and Reasoning - Which explanation most effectively links the evidence to the claim using sound reasoning? (NGSS SEPs: Constructing Explanations; CCSS WHST.6–8.1–2)

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 7.8 Constructing Explanations with Claim, Evidence, and Reasoning skill assessments:

Problem 1Difficulty: Mastery

Students compared boiling temperatures at different locations. In a lab at sea level, water boiled at 100°C. On a mountain trip, the same thermometer showed water boiling at 93°C. Claim: Lower air pressure at higher altitude lowers water’s boiling point. Evidence: Boiling temperature was lower on the mountain where air pressure is lower than at sea level.

Which explanation most effectively links the evidence to the claim using sound scientific reasoning?

AThe claim is supported because at higher altitude, air pressure is lower, so water’s vapor pressure matches it at a lower temperature; that explains the 93°C boiling point and supports the claim. The evidence shows water boiled at a lower temperature where air pressure is lower. This is what we would expect because if boiling happens when vapor pressure matches air pressure, lower air pressure should allow boiling at a lower temperature.

BThe claim is supported because boiling is a phase change. The evidence shows water boiled at a lower temperature where air pressure is lower.

CThe evidence supports the claim since water boiled at 93°C because mountain water is colder water.

DThe evidence shows water boiled at a lower temperature where air pressure is lower. Therefore the claim is true.

Solution & Explanation:It links the evidence (water boiled at a lower temperature where air pressure is lower) to the claim by using the science idea that at higher altitude, air pressure is lower, so water’s vapor pressure matches it at a lower temperature; that explains the 93°C boiling point and supports the claim. The other choices either mostly restate the data, add irrelevant information, or use incorrect reasoning that doesn’t explain why the evidence supports the claim.

Problem 2Difficulty: Mastery

To clean dirty water, students compared two filter designs. Filter A used gravel and sand. Filter B used gravel, sand, and activated charcoal. They poured the same muddy water through each and measured odor and cloudiness. Claim: Activated charcoal can improve filtration by removing dissolved impurities.,,Science Evidence: Both filters reduced cloudiness, but Filter B produced clearer water with much less odor than Filter A.,Science "

Which explanation most effectively links the evidence to the claim using sound scientific reasoning?,A. The evidence supports the claim since Filter B worked better because it had more layers

Anot because of charcoal.

BThe evidence shows the charcoal filter improved clarity and reduced smell more than sand and gravel alone. That is the explanation.

CSince filters can remove particles

Solution & Explanation:if charcoal has many tiny pores that trap or absorb dissolved substances

Problem 3Difficulty: Mastery

Students tested evaporation using the same 30 mL of water. Container A was a wide, shallow dish. Container B was a tall, narrow cup. Both sat in the same room with no fan. Claim: Greater surface area increases evaporation rate. Evidence: After 4 hours, Container A had 10 mL left. Container B had 22 mL left.

Which explanation most effectively links the evidence to the claim using sound scientific reasoning?

AThe evidence supports the claim since more water evaporated from the dish because it was closer to the table.

BThe evidence shows much more water evaporated from the wide dish than from the narrow cup. That is the explanation.

CThe claim is supported because the shallow dish exposed a larger surface area, so more water molecules could evaporate at once, leading to a larger volume loss compared with the narrow cup. The evidence shows much more water evaporated from the wide dish than from the narrow cup. This is what we would expect because if more surface area exposes more molecules to air, more molecules can escape each minute.

DSince evaporation happens at a liquid’s surface, the claim must be correct even without using the evidence.

Solution & Explanation:It links the evidence (much more water evaporated from the wide dish than from the narrow cup) to the claim by using the science idea that the shallow dish exposed a larger surface area, so more water molecules could evaporate at once, leading to a larger volume loss compared with the narrow cup. The other choices either mostly restate the data, add irrelevant information, or use incorrect reasoning that doesn’t explain why the evidence supports the claim.

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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 SCI.7.8 (Grade 7 science practice focused on constructing explanations with claim, evidence, and reasoning.).