During the process of transmission, it is obvious that something passes from the sounding body to the ear, in order to produce the sensation of sound from the...
Gases are all around us. Many of them are vital to our life. The oxygen we breathe reacts with certain nutrients such as carbohydrates or lipids to give us energy....
Matter is defined as anything that has mass and takes space. It is everything around us. Rocks, oceans, plants, animals, houses and cars are all examples of matter....
Do you know ice is a solid and water is a liquid; how the battery in your car works to start the engine; why glass is fragile but not plastics; how different colors...