Barometric pressure

1. By Allison Pobanz Barometric Pressure

2. It is the force per unit area exerted on a surface by the weight of air above that surface in the atmosphere of Earth (or that of another planet ). Say what????(: What is Barometric Pressure?

3. It is caused by how many molecules of air there are in a specific area, how fast they are moving, and how often they collide. What causes this??? SCIENCE!!!!!!

4. It is measured by a instrument called a barometer! How is this measured?

5. Barometric pressure changes constantly in any given area at any time. These changes create the winds, clear the skies, or make clouds. What can it do?

6. Barometric pressure is a great way to predict weather forecasting's. For example, rising barometric air pressure means clearing skies and fair, normal weather. Falling pressure means that wet or stormy weather is in the near future. (My grandma has o ne of these!) Important to weather forecasting's