1. Chapter 2 Section 1 pages 36-43
Water in the Air
Chapter 2 Section 1 pages 36-43
~Focus points~
weather water cycle forms of water
humidity evaporation condensation dew point cloud precipitation

2. Weather
The condition of the atmosphere at a particular time and place.

3. ~Water Cycle~
Continuous movement of water from water sources into the atmosphere, and back onto/into ground and back to water sources.
H2O

4. Clouds Condensation Precipitation Evaporation Transpiration Run off
Solar
Precipitation
Evaporation
Transpiration
Run off
Ground Water
Water Cycle

6. Gas~~~~~~~~~~~~~~~~~~~
3 Forms/States of Water 1.
Solid~~~~~~~~~~~~~ 2.
Liquid~~~~~~~~~~~~
Gas~~~~~~~~~~~~~~~~~~~ 3.

7. Humidity & Relative Humidity
Humidity: Amount of water vapor or moisture in the air.
Relative Humidity (%): amount of moisture the air contains compared to amount it can hold.

8. Evaporation Liquid changing into water vapor (gas).
Rising into atmosphere.
Example- wet-to-dry chalkboard

9. Transpiration
Water vapor
The process where plants release water vapor into the air through their leaves.

11. Condensation Process of water vapor (gas) becomes a liquid.
This happens during 100% relative humidity when air cools.
Example: shower mirror moisture

13. Dew Point
Air around the glass cooling
Temperature that the air must cool to, to be completely saturated.
Ex: Ice in a glass cools the surrounding air. The glass gives the water vapor a surface to condense on.

14. Collection of million water droplets or ice crystals
Cloud
Collection of million water droplets or ice crystals
Forms as warm air rises
3 Types
1. Cummulus
2. Stratus
3. Cirrus

15. Precipitation Water that falls from the atmosphere to the Earth
4 types
1. rain - liquid water
2. snow - frozen water
3. sleet - freezing rain (winter)
4. hail - balls of ice (spring/summer)

17. Word Bank for Diagram Solar energy Infiltration
Precipitation Condensation
Lake/water source Cloud
Run off Ground Water
Evaporation
Transpiration

18. Stop here…

19. What is a water shed??
Land area where water run off (rain and snow) drains into a marsh, stream, lake, reservoir, or ground water.
Water quality is a reflection of land uses of a particular water shed area.

21. What is Run Off?

23. ?Pollution? 1. Non Point Source 2. Point Source
Negative effect on our environment
Different forms (air, water…)
2 types of water pollution
1. Non Point Source
2. Point Source

25. 1. Non Point Source ~~~~~~~~ Known as polluted run off
Cannot be traced back to source
From scattered sources
Leading cause of US water pollution
We are the solution

26. Non Point Source examples
Excess fertilizers, insecticides..
Oil, grease and toxic chemicals
Bacteria from livestock, pets…

27. 2. Point Source Pollution
~~~~~~~~~~~~~
Pollutants that can be traced to a source.
Examples:
Factories discharge pipe
Sewage ditch