Free Printable WorksheetScienceGrade 8Science CurriculumSCI.8.51

8.51 Action Reaction Pairs Worksheet

Download our free printable Grade 8 Science worksheet on 8.51 Action Reaction Pairs. Ideal for classroom practice, homeschool learning, independent homework, and standardized test preparation. Available in both print-ready PDF and editable DOCX formats.

Choose your preferred download format:

100% Free • No registration or login required • Instant file access

Download PDF Download DOCX

Prefer interactive practice with instant grading and explanations?Practice Action-Reaction Pairs Online

Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Grade 8 Science worksheet provides structured practice on 8.51 Action Reaction Pairs. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Action–Reaction Pairs - Identify force pairs in interactions (object A on B and B on A) and explain why they do not cancel for one object’s motion? (NGSS MS‑PS2‑1; TEKS §112.28 Grade 8; FL NGSSS; VA SOL; MA STE)

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 8

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 8.51 Action Reaction Pairs skill assessments:

Problem 1Difficulty: Mastery

A block is pulled upward at constant speed by a rope. The rope tension equals the block’s weight.

Even though the two forces on the block balance, which is the correct statement about third-law pairs?

AThe tension pairs with the ceiling’s push on the rope because both point upward.

BThe weight pairs with the rope tension because both involve the block.

CThe tension and the weight are a third-law pair because they are equal and opposite.

DThe tension on the block pairs with the block’s pull on the rope, not with the block’s weight.

Solution & Explanation:Balanced forces can act on the same object, but third-law pairs act on different objects. Tension on block pairs with block on rope; weight on block pairs with block on Earth.

Problem 2Difficulty: Mastery

A box is sandwiched between two horizontal springs, left and right, both compressed equally. The left spring pushes right on the box with 60 N; the right spring pushes left on the box with 60 N. "

Which option correctly states the third-law partner to the left spring’s 60 N force on the box?,A. The box pushes right on the right spring with 60 N. | B. The right spring pushes left on the box with 60 N. | C. The box pushes left on the left spring with 60 N. | D. The box pushes right on the left spring with 60 N.,C,Third-law pairs are between the same two objects. The left spring’s force on the box pairs with the box’s force on the left spring

Aequal and opposite (60 N).,NO,,,,,online_practice_skill_page,practice,grade 8 science action-reaction pairs practice questions,action-reaction pairs online practice

Baction-reaction pairs review

CSCI.8.51 practice

Dgrade 8 science physical science: forces

Solution & Explanation:and fields questions,Action-Reaction Pairs Practice Questions for Grade 8 Science,Action-Reaction Pairs Practice Questions,Grade 8 Science Action-Reaction Pairs Online Practice | FreeK12Practice,Grade 8 science practice on action-reaction pairs. Review forces and motion with online questions and explanations.,action-reaction-pairs-practice,/grade-8/science/physical-science-forces-motion-and-fields/sci-8-51/action-reaction-pairs-practice/,Grade 8 Science: Forces

Problem 3Difficulty: Mastery

A student pushes a chair across the floor. The chair pushes back on the student. The student doesn’t slide because of static friction with the floor.

Which pair is the correct third-law pair for the static friction force that prevents the student from sliding?

AThe student pushes forward on the chair, and the chair pushes backward on the floor.

BThe floor pushes forward on the student, and the student pushes backward on the floor.

CThe chair pushes backward on the student, and the floor pushes forward on the student.

DGravity pulls down on the student, and the floor pushes up on the student.

Solution & Explanation:The friction preventing slipping is between student’s shoes and floor. Floor on student and student on floor are equal and opposite; chair forces are a different interaction.

Want more practice questions with step-by-step guidance?

Practice All Questions Online

Frequently Asked Questions

Common questions about printing, using, and solving this worksheet

QHow do I download and print this 8.51 Action Reaction Pairs worksheet?

Click either the "Download PDF" or "Download DOCX" button at the top of the page. You can print the PDF directly from your browser or edit the DOCX file in Microsoft Word or Google Docs to tailor the questions to your students.

QIs this 8.51 Action Reaction Pairs worksheet free for teachers and homeschoolers?

Yes! All learning materials, worksheets, and practice resources on Free K12 Practice are 100% free for teachers, students, parents, tutors, and homeschooling families for non-commercial educational use. No account or subscription is required.

QCan students practice 8.51 Action Reaction Pairs online with instant feedback?

Yes! In addition to this printable worksheet, students can practice 8.51 Action Reaction Pairs 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 Grade 8 Science students. It aligns with educational standard SCI.8.51 (Identify paired forces that act on different objects during interactions.).