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Forces & Engineering

Kindergarten · Building confidence · 8 questions · Version PG-DMLVNP-1B3W

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

Explain “simple machine” in your own words.

2.

Explain “kinetic energy” in your own words.

3.

Explain “friction” in your own words.

4.

Explain “potential energy” in your own words.

5.

Explain “unbalanced forces” in your own words.

6.

Explain “electric circuit” in your own words.

7.

Explain “gravity” in your own words.

8.

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