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earth scienceeasy

Rock Candy: Growing Edible Crystals

This experiment guides you through the process of making rock candy by growing large sugar crystals from a solution. It's a fun, edible project that demonstrates the same principles of crystallization that form minerals and rocks in the Earth's crust.

10 days·elementary

physicshard

The Physics of a Trebuchet: Launching for Distance

This project involves constructing a small-scale trebuchet, a type of medieval siege engine. You will then experiment with variables like the counterweight mass and projectile mass to see how they affect the launch distance of a projectile, exploring concepts of potential and kinetic energy.

10 days·high

chemistryhard

The Effect of Temperature on Liquid Viscosity

This experiment measures how quickly a marble falls through different liquids at various temperatures. By timing the marble's descent, you can calculate a relative measure of viscosity and determine how it changes when the liquids are heated or cooled.

2 days·high

biologyhard

The 5-Second Rule: Fact or Fiction?

This experiment scientifically tests the validity of the '5-second rule.' By dropping food onto a surface for different lengths of time and then culturing the bacteria transferred to the food, you can visually determine if time makes a difference in contamination.

7 days·high

earth scienceeasy

Creating a Tornado in a Bottle

This experiment demonstrates how a vortex, similar to a tornado, is formed when water drains from one bottle to another. By swirling the bottle, you create a whirlpool that allows air and water to flow past each other, creating a mini-tornado.

1 days·elementary

physicsmedium

Building a Solar Oven to Cook S'mores

In this project, you will design and build a functional solar oven using a cardboard box, aluminum foil, and plastic wrap. You will then test your oven by using it to melt chocolate and marshmallows for s'mores, demonstrating the conversion of light energy to heat energy.

2 days·middle

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