1. Weather insterments and tecnology By: Ashby H

2. Baromaters They use baromaters in all weather A barometer is small.it has all different kinds of weather such as: raining, cloudy, tornado, hurricane etc.

3. Weather balloon A weather balloon is a balloon (specifically a type of high altitude balloon) which carries instruments aloft to send back information on atmosephere presuretemp., huminity and wind speed by means of a small, expendable measuring device called a radiosound. To obtain wind data, they can be tracked by radar, radio direction finding, or navigation systems (such as the satellite-based global positioning, GPS).

4. hygromater A hygrometer (UK: is an instrument used for measuring the moisture content in the environmental air, or huminty. Most measurement devices usually rely on measurements of some other quantity such as temperature, pressure, mass or a mechanical or electrical change in a substance as moisture is absorbed. From calculations based on physical principles, or especially by calibration with a reference standard, these measured quantities can lead to a measurement of humidity. Modern electronic devices use temperature of condensation, or changes in electrical capacitance or resistance to measure humidity changes.

5. Fun facts Did you know weather balloons are real balloons? Well guess what they are!!! It was a student of Galileo's named Evangelista Torricelli who invented the barometer. The original one appeared in the early 1600s. Torricelli applied the concepts of a vacuum to his ideas about measuring air pressure. He had been familiar with his teacher’s many notes and used them to help construct his new invention after Galileo died. The first barometer used water to gauge the weight of the air in the atmosphere.

6. sources Answers.com Weather balloons Baromaters book: hurricanes and tornados Book: weather

7. The end!! I hope you liked learning about weather and the insterments they use to predict what weather is coming!!!