1. WEATHER

2. WEATHER
Meteorology
The study of weather
Meteorologist is a person who studies and analyzes weather.
Weather is caused by the movement or transfer of energy.
Energy is transferred wherever there is a temperature difference between two objects.
Easy to observe, difficult to explain, and nearly impossible to predict accurately.

3. WEATHER
Many weather phenomena result from a transfer of energy that occurs via the movement of air in the atmosphere.
This is known as convection
Air contains vapor from the evaporation of liquid sources on the Earth’s surface.
When air cools it condenses and released water vapor in the form of precipitation.
This is a brief overview of the water cycle.

5. WEATHER
The physical transfer of heat and moisture through the convection process is the basis for the formation of many meteorological patterns and features including:
Fronts, thunderstorms, tornadoes, depressions, etc.

6. WEATHER Weather is the short-lived condition of the air.
Short-lived because in some places you could experience complete weather patterns in one day.
Some weather conditions continue for several days, weeks, or months.

7. What Does Weather Consist Of?
Temperature
The measure of the kinetic energy of an object.
How fast it is moving.
The more kinetic energy (the faster the particles are moving), the higher the temperature
Measures heat
The higher the temperature the hotter it is.

8. What Does Weather Consist Of?
Measuring Temperature
Thermometers
Measure air temperatures
Readings are expressed in degrees Fahrenheit and/or Celsius (Centigrade)
Two types
Mercurial Thermometers
Not used as often any more because Mercury is hazardous
Alcohol Thermometers

9. What Does Weather Consist Of?
Air Pressure
How “heavy” the atmosphere is at any given location
Measured using barometers
An aneroid barometer is an example.
Readings are expressed in inches, centimeters, or millibars.

10. What Does Weather Consist Of?
Precipitation
The amount of moisture that is released in various forms
Snow, rain, hail
Measured
Using a rain gauge
Readings are expressed in inches or centimeters

11. What Does Weather Consist Of?
Wind speed
How fast or slow the wind is moving
Measured
Uses an Anemometer to measure wind speed
Readings are expressed in miles per hour or kilometers per hour.

12. What Does Weather Consist Of?
Relative Humidity
This consists of air quality and amount of water vapor.
How much moisture is in the atmosphere
Measured
Uses a psychrometer
Readings are expressed in percent
Uses a hygrometer

13. What Does Weather Consist Of?
Other conditions considered:
Cloud Conditions
Types of clouds present
Visibility