Posterous theme by Cory Watilo

4RJ Tested the Strength of Magnets

4th grade students designed tests to determine how well magnets work THROUGH different objects.

Here are some of the students' conclusions:

"With what I tested, any thing more than 1cm thick would not stick.  Anything less would stick." -Matthew

"Most of my objects that I tested were not able to stick because of how thick the object is." -Dylan

"If something is too dense, magnetic forces will not be strong enough to pass through the tightly packed molecules." -Theo

"All of the objects that the magnet stuck through were less than 1cm thick." -Gigi

"Overall, the magnet sticks through light /not dense material." -Octavia

"The magnet's force will effect the object more than anything else." -Adam

"How the magnet works depends on the strongness of the magnets and the thickness of the object." -Sophia