Materials List: A Merry-Go-Round for Dirty Air

Each student needs:

  • 1 small paper cup (or Dixie cup)
  • a dab of petroleum jelly (Vaseline)
  • 1 teaspoon black pepper
  • 1 pencil or pen
  • paper towels (for cleaning petroleum jelly from fingers)
https://www.teachengineering.org/activities/view/cub_air_lesson10_activity3