If you leave of cup of water on a sunny table outside, the water disappears in a couple days. Where does it go? When water “disappears,” how does it get back to us? Learn how to make a water cycle mod ...
Bacteria are one celled organisms that are essential for all life’s survival, but they also cause many diseases, including strep throat, cholera, many types of food poisoning, and the Black Plague, to ...
Every day we use personal care products like shampoos, soaps, and lotions. We trust that these substances will clean and beautify us without giving us rashes. The scientists who design shampoos and fa ...
With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science! Have you ever wondered what makes candy bars different, besides ...
The sprouting of seeds is called germination. A germinating seed has a baby plant, called an embryo, on its surface. This tiny living thing gets its nutrients from the cotyledon, which is the fleshy p ...
It’s fascinating to watch how the moon changes over a month.For a couple days, it is a full bright circle. Then, it begins to shrink, until only a tiny crescent remains.Then, it disappears all togethe ...
Magnetic fields are invisible. You can’t see them, but you can see what they do, like attract a paper clip or push another magnet away. But wouldn’t it be cool if we could find out how to show the dir ...
Sometimes the best part of a package is the packing peanuts! They’re the inch-long, puffy pieces that protect fragile things like pictures frames and cups from breaking when they are shipped long dist ...
Thermometers tell us important information, like whether we should bring a parka or swimsuit when we go on vacation! There are two well known temperature scales: Fahrenheit (F for short) and Celsius ( ...
Chlorine is a chemical added to water supplies to kill microorganisms. Microorganisms are tiny living things like bacteria, viruses, and protozoans that cannot be seen with the naked eye.Cholera, typh ...