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Forces & Engineering

Kindergarten · On-level practice · 8 questions · Version PG-11QRDRP-1Y78

Children investigate a leaf and a frog with a caregiver beside a pond.
1.

Explain “unbalanced forces” in your own words.

2.

Explain “force” in your own words.

3.

Explain “friction” in your own words.

4.

Explain “electric circuit” in your own words.

5.

Explain “gravity” in your own words.

6.

Explain “potential energy” in your own words.

7.

Explain “magnet” in your own words.

8.

Explain “kinetic energy” 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 12
  1. Explain “unbalanced forces” in your own words.forces producing a nonzero net force
  2. Explain “force” in your own words.a push or pull that can change motion
  3. Explain “friction” in your own words.a force opposing motion between surfaces
  4. Explain “electric circuit” in your own words.a complete path through which electric charge can move
  5. Explain “gravity” in your own words.an attractive force between masses
  6. Explain “potential energy” in your own words.stored energy based on position or condition
  7. Explain “magnet” in your own words.an object producing a field that attracts or repels certain materials
  8. Explain “kinetic energy” in your own words.energy an object has because of motion

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.