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Forces & Engineering

Grade 2 · On-level practice · 8 questions · Version PG-1NICX24-1K25

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1.Explain “mechanical advantage” in your own words.
2.Explain “balanced forces” in your own words.
3.Explain “electric circuit” in your own words.
4.Explain “potential energy” in your own words.
5.Explain “kinetic energy” in your own words.
6.Explain “unbalanced forces” in your own words.
7.Explain “constraint” in your own words.
8.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 8
  1. Explain “mechanical advantage” in your own words.the factor by which a machine multiplies force
  2. Explain “balanced forces” in your own words.forces with zero net effect on motion
  3. Explain “electric circuit” in your own words.a complete path through which electric charge can move
  4. Explain “potential energy” in your own words.stored energy based on position or condition
  5. Explain “kinetic energy” in your own words.energy an object has because of motion
  6. Explain “unbalanced forces” in your own words.forces producing a nonzero net force
  7. Explain “constraint” in your own words.a limit a design must satisfy
  8. 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.