Grade 3 · Science · On Level
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 · On-level practice · 8 questions · Version PG-19G0V9T-DJ0B
1.Explain “electric circuit” in your own words.
2.Explain “unbalanced forces” in your own words.
3.Explain “Newton's third law” in your own words.
4.Explain “magnet” in your own words.
5.Explain “balanced forces” in your own words.
6.Explain “potential energy” in your own words.
7.Explain “prototype” in your own words.
8.Explain “constraint” 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 “electric circuit” in your own words.a complete path through which electric charge can move
- 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 “magnet” in your own words.an object producing a field that attracts or repels certain materials
- Explain “balanced forces” in your own words.forces with zero net effect on motion
- Explain “potential energy” in your own words.stored energy based on position or condition
- Explain “prototype” in your own words.an early model used to test a design
- Explain “constraint” in your own words.a limit a design must satisfy
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.