Grade 3 · Science · Building Confidence
Free Forces & Engineering worksheet - version 18
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-1DWBERE-1SV0
Explain “unbalanced forces” in your own words.
Explain “potential energy” in your own words.
Explain “mechanical advantage” in your own words.
Explain “kinetic energy” in your own words.
Explain “magnet” in your own words.
Explain “Newton's third law” in your own words.
Explain “balanced forces” in your own words.
Explain “prototype” 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 18
- Explain “unbalanced forces” in your own words.forces producing a nonzero net force
- Explain “potential energy” in your own words.stored energy based on position or condition
- Explain “mechanical advantage” in your own words.the factor by which a machine multiplies force
- Explain “kinetic energy” in your own words.energy an object has because of motion
- Explain “magnet” in your own words.an object producing a field that attracts or repels certain materials
- Explain “Newton's third law” in your own words.forces occur in equal and opposite pairs
- Explain “balanced forces” in your own words.forces with zero net effect on motion
- Explain “prototype” in your own words.an early model used to test a design
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.