Get Your Science On is our newest podcast. It features the Little Shop of Physics traveling hands-on experiments that make up our road program (see School Visits). These short videos will teaching you how to make cool science experiments with household items.
Check out Destiny’s unique take on a wormhole infinity mirror. This one uses a welding helmet to make a hole in your head! 2 semi-transparent mirrors (all called one-way or see-through mirrors) 1 welding helmet 1 string of battery-powered fairy lights or holiday lights tape, scissors, and glue
Beau shares one last experiment with Heather before he heads off to medical school. “Muscle Memory” uses nitinol wire; sometimes called memory wire, nitinol is a nickel-titanium alloy that “remembers” its previous shape and reverts back to it when heated. The mechanism is an unusual phase change in the metal.
Eva has an egg and a bottle. The egg will not fit in the mouth of the bottle. She uses two different methods to get atmospheric pressure to push the egg into the bottle. The first method uses hot water, some of which evaporates. The water vapor displaces the air inside of the bottle. When the bottle is cooled, the vapor condenses into a liquid, which decreases the pressure inside of the bottle. The second method is similar, but uses a small fire to heat the air inside of the bottle, causing the air to expand. When the flame goes out, the air cools, lowering the pressure on the inside of the bottle.
Continuing on our theme of atmospheric pressure, this week we experiment on increasing and decreasing pressure, and how it affects the air trapped inside of marshmallows.
A plastic bag is connected to a vacuum pump. Initially the air inside the bag pushes out with the same force as the air outside of the bag pushing in. However, when the air is pumped out of the bag there is nothing to counteract the atmosphere squeezing the bag against the bear.
Last time we saw that we can separate mixtures by using size and magnetism. This time we use density to separate a mixture. This process is used to separate different types of plastics so that they can be recycled.
River sand is a mixture: it’s a combination of many types and sizes of materials that are combined together without being chemically bonded to each other. Mixtures can be unmixed, or separated into component parts using various physics techniques.
Victoria has a simple surprising experiment. What Keeps the Ball in the Cup?