Science is all about trying to understand the way the world around us works. Because many things are not obvious, science is mostly about investigation.

Much science works like this: you see something and you wonder how it works. You have a guess at how it works (this is called a hypothesis). Then you make up an experiment to try to find out if you are right. Usually the experiment involves measurements. If you get lots of measurements, the pattern of the measurements may tell you something important. If you are very clever, and lucky, you might find out something new and make a law that describes it. One of the world's greatest scientists, Sir Isaac Newton, did this when he developed a law of gravity that works all over the Universe.

It is exciting to find things out. But there is so much to find out, science has been divided into compartments. Normally science is divided into living things (biology), how objects move (physics), and what they are made of (chemistry). Medicine is often thought of as another branch of science.

Now it is fine to want to know about science, but we can use this knowledge to make small changes to the natural world that make life better for us. For example, we can cure diseases, make bridges, invent steam and diesel engines, planes, rockets, plastics...the list is endless.

The way science laws are used to make things is called technology. Many technologists are called engineers. They are the people who make the computers that you are reading this on now (even if what you are reading it is on a phone, it is still a computer). Now, what could be more exciting than finding out how to make computers, or curing people of illnesses? That's science!

The video below is just one of the exciting experiments you can do in science. To find hundreds more, jump to the science section.