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Forces & Engineering

Kindergarten · On-level practice · 8 questions · Version PG-F15IT9-1Y78

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1.Explain “kinetic energy” in your own words.
2.Explain “simple machine” in your own words.
3.Explain “potential energy” in your own words.
4.Explain “friction” in your own words.
5.Explain “force” in your own words.
6.Explain “magnet” in your own words.
7.Explain “balanced forces” in your own words.
8.Explain “electric circuit” 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 9
  1. Explain “kinetic energy” in your own words.energy an object has because of motion
  2. Explain “simple machine” in your own words.a device that changes the size or direction of a force
  3. Explain “potential energy” in your own words.stored energy based on position or condition
  4. Explain “friction” in your own words.a force opposing motion between surfaces
  5. Explain “force” in your own words.a push or pull that can change motion
  6. Explain “magnet” in your own words.an object producing a field that attracts or repels certain materials
  7. Explain “balanced forces” in your own words.forces with zero net effect on motion
  8. Explain “electric circuit” in your own words.a complete path through which electric charge can move

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.