The Principle behind the Science project

Think of a science fair exhibition and you can see a number of working models and some three dimensional models all lined up for the judges. However it is not the size of you model that will make it an award winner. When you make a science project you are putting some scientific principle to use.

You model is based on some basic facts which are irrefutable. These facts or scientific principles is what the judges hope to hear you explain when you present the model to them. If you do not know what makes your model work, it means that even though you have built it, your knowledge is incomplete.

If you are making a parachute to bring down some thing safely from the top floor of a building you need to understand a few principles including that of gravity. Other terms that you need to understand will include things like air resistance, drag, load, and surface area.

Take a look at the science project here if you are interested in making a parachute. This may help you understand better why a sky diver lands softly on the ground with the help of a parachute, while without one he would have  a hard fall. These are the facts that your judges as the science fair exhibition expect you to bring out along with th eworking model of a parachute.