Does Weather Control Your Life Weather Weather Weather

Does Weather Control Your Life? ? ? Weather!

Weather • Weather- condition of the atmosphere at a certain time and place. – Weather Characteristics: • • Heat energy Air pressure Winds Moisture

Weather Data Collection 3 Ways Weather is Determined • Weather Satellites- take pictures of clouds and storms from above the earth • Radar (Radio Detecting and Ranging)- sends out signals that are reflected from objects (rain, clouds, etc. ) • Weather Stations-More than 400 in the U. S.

Air Masses • Air Mass- a large body of air with a certain temperature and moisture – Maritime tropical-forms over the tropical ocean & warm and moist – Maritime polar-forms over northern ocean & cold and moist – Continental tropical- made of hot, dry air – Continental polar- made of cold, dry air

Weather Fronts • Front- leading edge of air mass • Cold Front- bring violent storms followed by cool weather • Warm Front -bring rain and showers with warm humid air Occluded Frontmake light rain • Stationary Front- bring many days of rain

Air Pressure • Air Pressure=Barometric • Barometric Pressure-measure of weight of air pressing on earth’s surface. General Characteristics: Falling Pressure- stormy weather Rising Pressure-fair weather coming Steady Pressure-continue weather

Wind • Wind-Moving air – Made from differences in air pressure – The greater difference in air pressure the faster the wind • Weather Vane- changes points to show the direction of the wind • Anemometer- measures wind speed

Humidity • Humidity- the moisture in the air • Relative Humidity- a comparison of the amount of water vapor in the air to the greatest amount at that temperature. – Given as a % that is possible • Saturated- when the air is as full as possible with water • Psychrometer- compares the temperature of a wet and dry bulb of a thermometer – Typically the dry bulb is hotter temp

Dew • Dew- water vapor that has condensed on a surface into water – Occurs when the temperature next to the surface falls and the air next to the ground is full of water…. therefore, the water condenses instead of evaporates. • • Dew point- the temperature needed for the air to condense Dew depends on 2 factors. . 1. Air temperature near the surface 2. Amount of water in the air

Tornado • Tornado- a violent rotating column of air – Develop from a Thunderstorm • Water Spout-weak tornado over the water

• Before thunderstorms develop, a change in wind direction and an increase in wind speed with increasing height creates an invisible, horizontal spinning effect in the lower atmosphere. Rising air within the thunderstorm updraft tilts the rotating air from horizontal to vertical. An area of rotation, 26 miles wide, now extends through much of the storm. Most strong and violent tornadoes form within this area of strong rotation

Hurricane

Hurricane • Few Interesting Facts: – All hurricanes circle around an “eye” (The center of the storm) – The center of the storm is the calmest part – They can be up to 600 miles across – The winds travel from 75 -200 mph

Weather • Interactive Current Weather Map

Your Topic Goes Here • Your Subtopics Go Here

Transitional Page

Backdrops: www. animationfactory. com - These are full sized backdrops, just scale them up! - Can be Copy-Pasted out of Templates for use anywhere!