Water Pressure and Depth Have you ever watched scuba divers on tv? They face many challenges when they dive. The deeper that a scuba diver descends, the more dangerous the dive becomes. During a dive, divers can experience lots of different problems. Some of these problems can be lightheadedness, joint pain, coordination loss, and even…
Aquatic Respiration Project Have you ever sat down and watched fish in a tank or in a pond? Did you ever watch how the fish breathes? We, often call the flaps on either side of the head, gills, but those aren’t really the gills at all; they’re operculum. The gills are actually underneath those flaps…
A rheostat is a small device that allows you to control voltage flow by using a knob or a dial. Items you will need: 1. One (1) dry cell lantern battery or Two (2) “D” cell batteries. 2. A 2-inch long piece of wire 3. A socket and a bulb from a flashlight. 4. Roughly…
During hot weather, there is nothing better than to have a cool house to serve as your oasis. Aside from your air conditioning, plants can also contribute to making your home cooler. How do they do this? You’re about to find out! What you need: • A reflector lamp or the sun (the lamp…
Have you ever wondered how those colored carnations got their hues? You can make different colored flowers that are unique from all others. All you need to do is purchase the flower you want. What you need: • White colored flowers (rose or carnation) • Water • Pair of scissors • Food coloring • Small…
THE DENSITY DRINK To understand the tricky concept of density, you should drink it. Generally, density is fascinating. It becomes cool when you make it into a tasty, healthy beverage, which you can share with the entire class as you explain. What you need: • Various juices with different levels of density. [In juices, the…
Is animal saliva antiseptic? Stories about pioneers, travelers, or hunters who made it through their injuries because certain wild animals happened to lick their open wounds. Many cultures believe this. There is even a French saying, “Langue de chien, langue de médecin,” which translates to “A dog’s tongue is doctor’s tongue.” We’ve all heard that…
When you have too many seasonal fruits in your kitchen, you often want to taste them all at the same time. There are times when you pick a bunch of them and peel them all at the same time for convenient eating. Yet, have you ever thought that peeling the fruit removes its first layer…
DEMONSTRATING ENERGY WITH A RUBBER BAND CAR As you know, energy cannot be created, and it cannot be destroyed. It has many forms such as the following: • Mechanical energy—energy required to perform work • Thermal energy—heat energy • Kinetic energy—energy of motion • Potential energy—stored energy Potential and kinetic energy are usually paired during…
Shooting Stars If you are a serious astronomy fanatic like a lot of us are, you can probably remember that one event in childhood that started you along this exciting hobby. It might have been that first time you looked through a telescope. But for many of us, it was that first time we saw…