Grade 3 · Science · Building Confidence
Free Forces & Engineering worksheet - version 8
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-12LMBKH-1SV0
Explain “unbalanced forces” in your own words.
Explain “Newton's third law” in your own words.
Explain “prototype” in your own words.
Explain “magnet” in your own words.
Explain “kinetic energy” in your own words.
Explain “mechanical advantage” in your own words.
Explain “electric circuit” in your own words.
Explain “potential 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 8
- Explain “unbalanced forces” in your own words.forces producing a nonzero net force
- Explain “Newton's third law” in your own words.forces occur in equal and opposite pairs
- Explain “prototype” in your own words.an early model used to test a design
- 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
- Explain “mechanical advantage” in your own words.the factor by which a machine multiplies force
- Explain “electric circuit” in your own words.a complete path through which electric charge can move
- Explain “potential energy” in your own words.stored energy based on position or condition
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.