Thomas Alva Edison (1847-1931), was one of the most prolific American inventors of the 19th century. He was born on February 11, 1847, Milan, Ohio; the seventh and last child of Samuel and Nancy Edison. Edison did not learn to talk until he was almost four years of age. His delay in speaking was not […]
Energy Ball: Science Challenge
The Energy Ball is a fun, easy, and safe way to introduce kids to electric energy. On the outside of the Energy Ball are two metal strips. If you touch these strips with your fingers, the ball will flash a red light and buzz. This happens because something inside the ball produces an electric current […]
Energy: Electric, Light, Sound
Preview in new tab A “Mystery Ball” is used to demonstrates three types of energy: electric energy light energy sound energy Objectives: 1. To describe the physical properties of the energy ball.2. To identify the the types of energy produced by the Energy Ball: electric energy, light energy, and sound energy.3. To describe the difference […]
Positive and Negative Charges
The American scientists and statesman Benjamin Franklin (1706-1783) named the two natural forms of electric charges. He called one a positive charge and the other a negative charge. A charge (electric charge) is the property of subatomic particles within atoms that causes a force between the particles. The force between charged particles is called an […]