Free Printable WorksheetScienceGrade 9Science CurriculumNGSS HS-ETS1-1, HS-ETS1-3

9.6 Experimental Design, Controls, and Fair Tests 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 9.6 Experimental Design, Controls, and Fair Tests. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Experimental Design, Controls, and Fair Tests: MCQ focus: identify controls, constants, trials, sample size, and flaws that weaken a physical science or Earth science investigation. 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-ETS1-1, HS-ETS1-3 - NGSS-aligned Experimental Design, Controls, and Fair Tests: NGSS: HS-ETS1-1; HS-ETS1-3; NRC/DCI: ETS1.A-B; SEP/CCC: Planning investigations; evaluating designs / Cause and effect; Common: RST.9-10.8; MP.2; State refs: CA/NYSSLS aligned HS practice PEs; FL SC.912.N.1; TX science and engineering practices.

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 9.6 Experimental Design, Controls, and Fair Tests skill assessments:

Problem 1Difficulty: Mastery

Use the solar-oven investigation plan. A student compares black paper, foil, and white paper linings, but uses different box sizes and records one trial per lining. Which redesign is strongest?

AUse the largest box for the lining expected to get hottest.

BRun one trial and choose the lining with the highest single temperature.

CUse identical box sizes, the same light source and exposure time, several ovens per lining, and repeated trials.

DMeasure the black paper for 30 minutes and the foil for 10 minutes.

Solution & Explanation:The redesign controls box size, light, and time while adding independent samples and repeated trials for stronger evidence.

Problem 2Difficulty: Mastery

A student tests a hand-crank generator. Trial 1 uses 50 coil turns and slow cranking. Trial 2 uses 100 coil turns and fast cranking. Which redesign best tests the effect of coil turns?

AUse a different voltmeter scale for each trial.

BIncrease both coil turns and cranking rate in every trial.

CUse the same cranking rate for all trials while changing only the number of coil turns.

DMeasure only the trial that produces the highest voltage.

Solution & Explanation:Cranking rate affects voltage, so it must stay constant when testing the effect of coil turns.

Problem 3Difficulty: Mastery

Use the flowchart for a mineral-dissolving investigation. The chart changes solution temperature in Step 2 and changes stirring speed in Step 3 before measuring time. What is the best diagnosis?

AThe flowchart changes two factors before measurement, so it cannot isolate one cause.

BThe dependent variable is missing because time cannot be measured.

CThe flowchart is fair because both changes happen before measuring.

DThe control group is unnecessary because minerals are solids.

Solution & Explanation:If temperature and stirring speed both change before measuring dissolving time, either could affect the outcome.

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Frequently Asked Questions

Common questions about printing, using, and solving this worksheet

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QIs this 9.6 Experimental Design, Controls, and Fair Tests worksheet free for teachers and homeschoolers?

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Yes! In addition to this printable worksheet, students can practice 9.6 Experimental Design, Controls, and Fair Tests interactively on our platform with automated grading, instant score tracking, and detailed step-by-step solutions.

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-ETS1-1, HS-ETS1-3 (NGSS: HS-ETS1-1; HS-ETS1-3; NRC/DCI: ETS1.A-B; SEP/CCC: Planning investigations; evaluating designs / Cause and effect; Common: RST.9-10.8; MP.2; State refs: CA/NYSSLS aligned HS practice PEs; FL SC.912.N.1; TX science and engineering practices.).