Physics: Age 11

11 illustrated Physics lessons for Age 11.

Inside a Soap Bubble A soap bubble is a pocket of air wrapped in a very thin film. The film is mostly water, held together by soap …
Water Pushes Up When an object is under water, the water pushes it upward. The size of that push is the same as the weight of …
A lamp beam on a curved panel A lamp shines onto a curved surface. Where the light lands straight on, all its energy is packed into a tiny s…
Air Presses Down Air is real stuff, so a tall stack of it weighs something and pushes down on everything below. When that push …
Balls Flying from a Cliff A hand throws balls sideways from a high cliff. Slow balls land soon, but faster balls travel farther and can …
Light through a microscope A small lamp shines light upward through a glass slide and two lenses. Each lens bends the light a little more…
High Tide on Both Sides Earth and the Moon both orbit a point that sits between them. The Moon's pull stretches Earth's oceans, so the…
Glowing Space Rock A space rock rushes into the air around Earth. The air pushes against it, gets very hot, and makes the rock gl…
Sunlight Through Cloud Droplets A cloud is made of countless tiny water droplets. Sunlight hits them and bounces off in every direction, so th…
Water droplet rainbow Sunlight passes into a round water droplet, bends, and bounces off the inside back. It leaves as a fan of colo…
Long Throats, Loud Roars A lion's throat has stretchy cartilage that opens into a long, wide space. Air pushed through that big space m…