1. Weather
EP.p2X B,C,D,E,G,H

2. Water in the Air

3. DO NOW
What is the difference between Weather and Climate? -Weather is the condition of the atmosphere at a particular time. -Climate is weather over long periods of time

4. Humidity Humidity- amount of water in the air
Warmer air holds more water vapor
Relative Humidity- amount of moisture in the air compared to (Divided By) how much the air can hold
EXAMPLE: Say the air can hold 24G’s of moisture, but only has 18G’s. What the relative humidity?

5. Psychrometer- device that measures relative humidity
Answer- 75%. 18G/24G = .75
Humidity/ Maximum Possible Humidity
Psychrometer- device that measures relative humidity
Relative Humidity can be affected by:
Rates of evaporation (Water vapor in the air)
Temperature

6. Process of Condensation
Condensation- gas become liquid
Before condensation can occur, relative humidity must be at 100%
Saturated- relative humidity at 100%
Dew Point- temp at which water vapor condenses

7. What’s the Difference?
Dew- when water vapor condenses on a given surface
Fog-cloud with ground surface contact
Clouds- moist air and particles rise quickly, cool, and condense

8. Assignment Day 1
1. What is the difference between relative humidity and humidity?
2. What are the two ways relative humidity can be affected?
3. What does relative humidity at 75% mean?
Calculate The Relative Humidity:
4. Possibly Humidity-64G, Current Humidity-16G
5. Possible Humidty-96G, Current Humidity 24G

9. Air Masses and Fronts

10. Types of Clouds Cumulus Stratus Cirrus Puffy, white, mid-level clouds
Thin, long-layered, low-level clouds
Cirrus
Feathery white clouds at high altitudes

11. Prefixes for Clouds
Add these to the front of the cloud types for a new cloud formation
Strato- low level clouds
Alto- mid level clouds
Cirro- high clouds
Nimbo/Nimbus- storm cloud

13. Air Mass- large body of air with similar temp and moisture
Cold masses bring cold weather, Warm masses bring warm weather
Front- boundary formed between two different air masses
Four types

14. Cold Front- cold mass meets and pushes warm air masses up

15. Warm Front- warm air mass meets and moves over top of a cold air mass (brings precip)

16. Occluded Front- fast moving cold mass over takes a slow warm front and slight warmer cold front, pushing them upward (Lots of Precip)

17. Stationary Front- cold air mass and a warm air mass meet
Stationary Front- cold air mass and a warm air mass meet. Neither move up or down

18. Assignment Day 2
1. What is the relationship between air masses and front?
2. What are the four types of fronts?
3.What kind of front occurs when two masses meet and neither overtakes the other?
4. What kind of front occurs when warm air meets cold air and overtakes it?
5. What kind of front occurs when cold air over takes two masses at once?

19. Forecasting Weather

20. Technology Thermometer- measures temp
Barometer- measures air pressure 
Wind Vane/Sock- measures wind direction
Anemometer- measures wind speed 

21. Eyes in the Sky
Weather balloons carry forecasting equipment as high as 30km
Temp, pressure, humidity
Radar is used to find location, movement, intensity of precip

22. Weather symbols used on
Weather Maps

23. Isobars- lines on weather map that connect areas of equal pressure

24. Assignment Day 3
1. What are at least three tools for collecting weather data?
2. How high can weather balloons travel?
3. For what reasons would you use radar?
4. How to isobars help when reading a weather map?
5. Why would meteorologists compare new maps with ones 24hrs old?
(what could they be monitoring?)

25. Reason for the Seasons

26. What are the reasons for the seasons?
DO NOW:
Give a guess as what you think are the reasons for the seasons here on Earth?
The seasons are caused as the Earth, tilted on its axis, travels in a loop around the Sun each year. Summers happens in the hemisphere tilted towards the sun, and Winter happens in the hemisphere tilted away.
Bill Nye-Seasons

27. Severe WEather