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Forces & Engineering

Kindergarten · Stretch challenge · 8 questions · Version PG-1LPKI1U-X0TZ

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

Explain “magnet” in your own words.

2.

Explain “force” in your own words.

3.

Explain “simple machine” in your own words.

4.

Explain “friction” in your own words.

5.

Explain “kinetic energy” in your own words.

6.

Explain “unbalanced forces” in your own words.

7.

Explain “electric circuit” in your own words.

8.

Explain “potential 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 11
  1. Explain “magnet” in your own words.an object producing a field that attracts or repels certain materials
  2. Explain “force” in your own words.a push or pull that can change motion
  3. Explain “simple machine” in your own words.a device that changes the size or direction of a force
  4. Explain “friction” in your own words.a force opposing motion between surfaces
  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 “electric circuit” in your own words.a complete path through which electric charge can move
  8. Explain “potential energy” in your own words.stored energy based on position or condition

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.