Search
  • Gloria Hoffner

The Cutting Edge

Have you ever wondered how a knife cuts? Here is a fun experiment for you and your residents.

Materials: Empty cardboard food box, plastic knife and modeling clay.

Process: Roll a ball from the clay. Ask residents to use the flat bottom of the empty box to cut the clay in half. Now ask residents to use the knife to cut the ball in half.

Result: The box bottom does not cut the clay because the force being applied is spread across the clay. The knife cuts the clay because the small edge of the knife concentrates the force in one area.



7 views0 comments

Recent Posts

See All

Earth Day 2020

Earth Day Celebrates 50th Anniversary April 22, 1970 was the first Earth Day, a day to honor and to offer ways to protect our fragile planet! Sir Fred Hoyle, British mathematician and astronomer, expl