Key definitions:

centripetal force: a force revolving around a center point

vacuum: a space with nothing in it (no matter, and no air)

Supplies:

• 2 clear plastic water bottles (but only one bottle cap) 

• Food coloring 

• A helpful adult / drill

Related STEM Careers:

Check out our blog post about Engineers, and how they design and invent the newest technology.

Related STEM History:

Read our overview of Leonardo Da Vinci’s life and accomplishments!