Grade 3 · Science · Building Confidence
Free Forces & Engineering worksheet - version 13
Grade 3 forces & engineering practice with original, difficulty-matched questions. This printable version includes 8 grade-appropriate questions and a separate answer sheet.
Forces & Engineering
Grade 3 · Building confidence · 8 questions · Version PG-1BEEZIN-1SV0
Explain “balanced forces” in your own words.
Explain “unbalanced forces” in your own words.
Explain “constraint” in your own words.
Explain “prototype” in your own words.
Explain “mechanical advantage” in your own words.
Explain “Newton's third law” in your own words.
Explain “magnet” in your own words.
Explain “kinetic energy” in your own words.
Answers and teaching notes
Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.
Show answers for version 13
- Explain “balanced forces” in your own words.forces with zero net effect on motion
- Explain “unbalanced forces” in your own words.forces producing a nonzero net force
- Explain “constraint” in your own words.a limit a design must satisfy
- Explain “prototype” in your own words.an early model used to test a design
- Explain “mechanical advantage” in your own words.the factor by which a machine multiplies force
- Explain “Newton's third law” in your own words.forces occur in equal and opposite pairs
- Explain “magnet” in your own words.an object producing a field that attracts or repels certain materials
- Explain “kinetic energy” in your own words.energy an object has because of motion
Worked example
Identify forces, constraints, and evidence from a test before revising a design.
Common mistake
Changing several variables at once and losing a fair comparison.
Helpful hint
Change one feature and measure the result.