Rainbows happen when sunlight is refracted and dispersed in drops of rain or mist. Water is denser than air, so sunlight ...

Have you ever wondered how far Jupiter is from Mars or Venus from Earth? Our handy calculator makes it easy to find out! All distances are average and ...

Einstein Rings are a type of gravitational lensing in which the light from a galaxy or star passes a large object, like another galaxy or black hole, and is bent around it. If the alignment is right, ...

This activity uses Skittles to demonstrate radioactive decay. The rate of decay depends on the isotope of the element and is referred to as the half-life. Radioactive decay is a random process. To ...

The spring equinox marks the astronomical beginning of spring in the Northern Hemisphere. The balance of daylight shifts, marking the start of warmer, longer days. In the Southern Hemisphere, it marks ...

Butterflies are known to be sensitive to environmental changes, and their population numbers are a good indicator of either ...

STEM challenges are a fantastic way for children to learn in a hands-on, interactive way, hopefully sparking a curiosity and passion for science and technology. My ever growing collection of STEM ...

A singing balloon experiment is a great way to learn how sound works. If you put a small coin inside a balloon and spin it, the coin spins around the balloon, making the balloon vibrate very quickly.

Get ready to unleash your inner scientist with my HUGE collection of science experiments and investigations for home and school. Most of the activities use inexpensive materials you probably already ...

Planting and watching seeds grow is a fantastic spring science activity for children. Kids can start with a bean or seed in a jar to watch it germinate, observe seedlings and finally become a fully ...