Invisible Force

This Invisible Force handout & reference also includes:

Investigate invisible forces. Young engineers design a setup that changes the direction of a steel ball using a magnetic force. The purpose of the setup is to model the gravitational pull of spacecraft by planetary bodies.

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Instructional Ideas

  • Have a contest to see which group's setup is most accurate
Classroom Considerations

  • Activity uses three-inch-long "cow" or "snake-egg" magnets; be sure these are available or find an appropriate substitute
  • Learners should have prior knowledge of magnetism from the previous lesson
  • The last lesson in the five-part series

  • All lesson materials are professional-looking
  • Includes some optional extended activities

  • Activity could cause some confusion, as the NASA connection refers to an application of gravitational attraction rather than magnetic attraction