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Forces & Engineering

Grade 1 · On-level practice · 8 questions · Version PG-AYU8P5-13JF

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1.Explain “potential energy” in your own words.
2.Explain “force” in your own words.
3.Explain “magnet” in your own words.
4.Explain “gravity” in your own words.
5.Explain “balanced forces” in your own words.
6.Explain “friction” in your own words.
7.Explain “unbalanced forces” in your own words.
8.Explain “simple machine” 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 15
  1. Explain “potential energy” in your own words.stored energy based on position or condition
  2. Explain “force” in your own words.a push or pull that can change motion
  3. Explain “magnet” in your own words.an object producing a field that attracts or repels certain materials
  4. Explain “gravity” in your own words.an attractive force between masses
  5. Explain “balanced forces” in your own words.forces with zero net effect on motion
  6. Explain “friction” in your own words.a force opposing motion between surfaces
  7. Explain “unbalanced forces” in your own words.forces producing a nonzero net force
  8. Explain “simple machine” in your own words.a device that changes the size or direction of a force

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.