Balanced & Unbalanced Forces

Have you ever pushed a heavy object like a couch or a refrigerator? To get the fridge to move you must apply enough force to overcome the tug of gravity that is pulling it toward the floor. This is because the forces on the object are in balance. When forces on an object are in […]

Gravity, Matter, & Weight

Have you ever stood on a scale to see how much you weigh? Weight is a measure of how heavy something is. It is affected by the Earth or any other planet that pulls on objects due to their gravity. The more matter an object has, the stronger gravity will pull on it, and as […]

Everything In The Universe Is Made of Matter

Have you ever stopped to think about what everything in the universe is made of? Well, everything in the universe is made of something called matter. Matter is anything that takes up space and has mass. That means everything you can touch and see, like your toys, books, and even the air you breathe, is […]

How Heat Affects Substances

Have you ever touched a hot pan on the stove or felt the warmth of the sun on your face? These are examples of heat. Heat is a type of energy that makes things feel warm or hot. Heat travels from objects or substances that are hot to objects or substances that are cold. Heat […]

Energy Moving Through A Substance Creates Waves

Energy can move through substances in the form of waves. Waves are a type of energy that travels through a substance by vibrating the particles of that substance. The energy of the wave travels through the substance, but the particles of the substance do not move forward. Instead, they vibrate back and forth around their […]

Energy Can Be Changed From One Form To Another

Energy is the ability to do work or cause change. It can change from one form to another, but it cannot be created or destroyed. This is known as the law of conservation of energy. One way that energy can change is through energy transformations. Energy transformations are when energy changes from one form to […]

Energy Travels From Place To Place

Energy is the ability to do work or cause change. It can move from one place to another in different ways. Here are four ways that energy can move: Heat: Heat is a form of energy that is transferred from one object to another. Heat is transferred by radiation, conduction, and convection. Radiation: Heat can […]

Energy Can Be Transferred From One Object To Another

Energy is a type of force that can cause things to happen or move. It is all around us and can take many different forms. Some examples of energy include light, heat, and sound. One important thing to know about energy is that it cannot be created or destroyed. This means that energy always exists […]

Energy And Speed

Energy and speed are related in that energy can affect how fast an object is moving. If you add energy to an object, it can make the object go faster. But what is speed? Speed is a measure of how fast something is moving. It is usually measured in units like miles per hour or […]

The Law of Gravity

Legend states that gravity was discovered by a man named Issac Newton as an apple fell from a tree and hit him in the head. The more you consider this story though, the less likely it seems to be factual. Did no one understand gravity before Newton? Was he the first person to realize that […]