Blog
Teacher Demo – Water Quality Demonstration
This demonstration shows some differences between potable (drinkable) water and non-potable (non-drinkable) water. Variations in temperature, turbidity and pH level also determine the types of microorganisms that can thrive in each water sample. After the...
NASA released its first incredible video of our closest look at Saturn yet
https://youtu.be/f1vGQJw8q4c On April 26, the Cassini spacecraft flew closer to Saturn than ever before — between the gap that separates the planet from its rings. Since then, Cassini has been transmitting dozens of images of Saturn's surface. Here, NASA has compiled...
The Periodic Table: Crash Course Chemistry #4
https://www.youtube.com/watch?v=0RRVV4Diomg Hank gives us a tour of the most important table ever, including the life story of the obsessive man who championed it, Dmitri Mendeleev. The periodic table of elements is a concise, information-dense catalog of all of the...
Galileo’s Thermometer
The Italian scientist, Galileo Galilei, created one of the first thermometers in the late 1500s. It was a rather simple apparatus involving a long thin tube, open at one end, and a pan of water. Students can replicate this experiment, demonstrating the principle...
Teacher Demo/Student Activity: Powder Disaster
Introduction Flour is an ingredient that is found in most kitchens and used regularly for baking and cooking. Consequently, it is considered safe, and people do not regard the potential hazards. In reality, flour and dust explosions are extremely dangerous, and...
Much A-Do About Hair
https://youtu.be/sMCgOQj37IY All mammals have hair at some point in their lives, but none of them wear it quite like humans. Why does our hair grow where it does, and not grow where it doesn’t? How does our hair get its color? And why does it go gray and often fall...
Female dragonflies fake sudden death to avoid male advances | New Scientist
You could almost say they are drop-dead gorgeous: when certain female dragonflies are pursued by unwanted suitors, they deter them by crashing to the ground Source: Female dragonflies fake sudden death to avoid male advances | New Scientist
Freezing by Boiling Demo – Flinn Scientific
The boiling point of a liquid depends on the external air pressure. When water is placed under vacuum, the boiling point decreases and the water boils. Boiling, however, is an endothermic process—as the water boils, the temperature decreases, and the water soon...
Fire in ZERO-G!!
https://youtu.be/xdJwG_9kF8s The zero-g plane allows for a lot of experiments to be conducted without the expense of getting equipment into orbit. Apparently 80% of microgravity research can be performed in a zero-gravity plane, which is much cheaper than going to...
Tagging the Largest Shark on Earth – Our Blue Planet
https://youtu.be/a5nZ1ZDk6Zk The size of a school bus but in many ways a mystery, whale sharks continue to fascinate. Join a team of international scientists at a renowned marine sanctuary in Cabo Pulmo, Mexico and discover how we’re trying to better understand these...
Teacher Demo: Convection
This demo models how convection occurs in the atmosphere and hydrosphere by showing what happens at the interface of a hot fluid and a cold fluid. This simulates what happens when cold and hot air masses meet, as well as why/how the ocean regulates climate. The ocean...
What is the Crater-Dome Illusion?
In interpreting space or aerial photos, it’s important to notice where the source of light is originating. Noticing the light source is what helps you determine whether an object is a depression like a bowl, or a projection above ground such as a mound or dome. Click...