Have you ever tried to shut the car door on a warm, dry day and experienced a small shock of electricity? How about rubbing your shoes along a carpeted floor to shock your friends or family members? H ...
Horizontal projectile motion is one of the most basic examples of classical physics. Gravity is a force that causes acceleration towards the center of the Earth at 9.81 m/s2. This causes objects that ...
Energy comes in many forms. Electric energy can be converted into useful work, or mechanical energy, by machines called electric motors. Electric motors work due to electromagnetic interactions: the i ...
A hurricane, also called a typhoon or cyclone, is a common name for a tropical cyclone, which is a spinning storm system originating over water having wind speeds of over 118 km/hour or 73 miles/hour! ...
Planets are generally spherical because of gravity. The gravitational force created by a massive celestial body (a planet-sized body) attracts surrounding things towards its center. Gravity is relativ ...
How fast does light travel, and does it travel faster in water or air? The fastest thing in the whole universe is the speed of light in a vacuum (like outer space!), clocking in at a great 2.99 x 108 ...
Sounds, whether from talking, music, an earthquake, a fire or a sonic boom, travel in waves. Wave travel, called propagation, has a different velocity through each material, like water or air.Frequenc ...
The interactions between current, the flow of electrons, and magnets can be used to do useful work, like power motors, and will continue to be important in the future because they can be used for thin ...
Steam, which is the gaseous version of water, can be used to power trains, lights in buildings, and your very own model boat! Learn how to make a steam powered rocket boat to see Sir Isaac Newton's th ...
Lightning is the electronic discharge between particles in the air andclouds and the ground. Electricity is carried through current, or the flow of electrons, and lightning is caused by very large cur ...