We measured the speed of a ball bearing going through. We kept the ball bearing, the shapes and the watch the same. The triangle, rectangle and diamond shapes stopped the ball at their points. The circle was the only shape the ball could pass through at 2 seconds every try. My recordings showed that the volunteers were able to keep the fat insulated hands in the icy water for a longer time.
Whales keep warm in the icy ocean water because of the fat under their skin called blubber.
A rockets kit. Built a rocket. That rocket engines make it fly. Which liquid is thicker, water, oil, honey, or corn syrup. I though honey would have the most viscosity.