4th Grade

If you've worn headphones, watched TV, worked on a computer, or ridden in a car, then you have experienced the power of electromagnetism. Learn all about electricity, magnetism,...

There are many types of energy. From potential energy to kinetic energy, electrical energy to mechanical energy, energy is constantly changing from one form to another. Learn...

Just how big is Earth compared to our solar system, the Milky Way, or even the universe? Although Earth is home to many different species and it seems huge to us, it is very...

Stars light up the sky on a clear night. They may look the same from Earth, but they come in many sizes and colors. From the balanced forces of nuclear fusion and gravity...

Have you ever seen a tree at the grocery store buying dinner? Probably not! Discover how plants harness solar energy and other elements to make their own food through...

Playing Tug-of-War, pedaling a bike, jumping rope - these actions all require force! We typically don't notice most of the forces around us, but they surround us all the time...

What goes up must come down! How often have you heard this saying? This typically refers to the effects that gravity has on objects. Without gravity our lives and surroundings...

Have you ever studied fossils? Have you heard of fossil fuels? Fossil fuels are a very important part of our environment and some fossil fuels are being used up faster than they...

While only 12 people have actually had contact with it, many songs and movies have featured this shining object. But it's not a superstar, or even a star at all. It's our moon...

Light heats our skin, helps us see in the dark, and even helps cure cancer. Light is also used for many things that we may not know about. Learn how light is formed, how it...

From a tiny seed to a towering tree, plants reproduce and carry on generations in the most amazing ways. Learn the "how" and "why" about plant reproduction in this intriguing...

Every time you eat a sandwich, an apple, or a piece of cake, it's like you are eating a little piece of sunshine! The sun is the source of all energy on Earth and flows...