2. What is
Meteorology?

3. 1. Meteorologystudy of weather.
2. Meteorologistperson who
studies the
weather.

4. Why is the weather important to
us?
•
•
•
•
•
•
Know what to wear
Need an umbrella
Safe to travel
Crops
Outdoor activities
Protect homes, properties and livestock

6. What is Air?
A mixture of gases.
Nitrogen -78%
Oxygen -21%
Argon- 0.93%
Carbon Dioxide-0.03%
Neon, Helium- trace amounts
Also dust, water vapor, fumes and smoke

7. What are the
properties of air?

8. Properties of air:
1.
2.
3.
4.
5.
Air takes up space
Air has mass
Air presses sideways
Air presses up
Air presses down

9. What information
do we use for the
forecast of
weather?

10. Data needed to make a
forecast:
1. Temperature
2. Air pressure and wind
speed
3. Water vapor in the air
(humidity)

11. What are the
weather
instruments?

12. 1. Weather Vane or Wind
Vane
• Shows wind direction
(N,S,E,W)

13. 2. THERMOMETER
MEASURES AIR TEMPERATURE

14. 3. ANEMOMETER
• MEASURES
WIND
SPEED

15. 4. BAROMETER
MEASURES AIR PRESSURE

16. 5. SLING
PSYCHROMETER
MEASURES RELATIVE
HUMIDITY

17. 6. Rain Gauge
• Measures amount of
rainfall

18. 7. Wind Sock
• A tapered, open-ended
sleeve pivotally
attached to a pole, that
indicates the direction
of the wind blowing
through it, usually
used at airports.

19. 8. Weather Balloon
• A balloon used to
carry instruments aloft
to gather
meteorological data in
the atmosphere such as
wind speed, wind
direction, air pressure,
temperature etc..

20. Collecting Data:
• Weather stations
• Weather balloons
• Doppler radar
(satellites)

24. THE END