Free Printable WorksheetScienceGrade 9Science CurriculumNGSS HS-ETS1-1

9.2 Independent, Dependent, and Controlled Variables 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 9.2 Independent, Dependent, and Controlled Variables. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Independent, Dependent, and Controlled Variables: MCQ focus: identify manipulated, responding, and controlled variables in physical science and Earth science investigations. 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 - NGSS-aligned Independent, Dependent, and Controlled Variables: NGSS: HS-ETS1-1; SEP practice alignment; NRC/DCI: ETS1.A; experimental design; SEP/CCC: Planning investigations / Systems; Common: HSN-Q.A; RST.9-10.3; 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 9.2 Independent, Dependent, and Controlled Variables skill assessments:

Problem 1Difficulty: Mastery

A seismic damper test changes the viscosity of damper fluid and measures peak acceleration of the same model building under the same quake input. Which classification is correct?

AFluid viscosity is independent; peak acceleration is dependent; model height and quake input are controlled

BModel height, quake input, and acceleration are all independent variables

CQuake input is independent; viscosity and acceleration are controlled

DPeak acceleration is independent; fluid viscosity is dependent; model height is controlled

Solution & Explanation:Viscosity is the intentionally changed damper property, peak acceleration is measured, and model height and quake input are kept constant.

Problem 2Difficulty: Mastery

Use the polymer absorption table shown in the image. Polymer mass changes while water volume and soak time stay the same; water absorbed is recorded. Which variable is the responding variable?

ASoak time

BWater absorbed

CWater volume

DPolymer mass

Solution & Explanation:The responding variable is the measured outcome. Water absorbed is recorded after polymer mass changes.

Problem 3Difficulty: Mastery

For the question, How does pulley wheel diameter affect the force needed to lift a 2 kg load, which classification is correct?

AWheel diameter, lifting force, and load mass are all dependent variables

BLifting force is independent; wheel diameter is dependent; load mass is controlled

CWheel diameter is independent; lifting force is dependent; load mass is controlled

DLoad mass is independent; wheel diameter and lifting force are controlled

Solution & Explanation:Wheel diameter is changed, lifting force is measured, and the 2 kg load mass stays constant.

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Frequently Asked Questions

Common questions about printing, using, and solving this worksheet

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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-ETS1-1 (NGSS: HS-ETS1-1; SEP practice alignment; NRC/DCI: ETS1.A; experimental design; SEP/CCC: Planning investigations / Systems; Common: HSN-Q.A; RST.9-10.3; State refs: CA/NYSSLS aligned HS practice PEs; FL SC.912.N.1; TX science and engineering practices.).