1. Water Cycle and Precipitation
Be sure to click more then once in any slide.

2. B C A

3. Evaporation
The process by which liquid water enters the atmosphere as water vapor

4. Condensation
The process that changes water vapor back to liquid water or ice crystals.
This process in involved in cloud formation. As the water vapor rises the air becomes colder and it collects around dust particles to form clouds.

5. Click on each type of precipitation.
occurs when so much water has condensed into the clouds that they can not hold any more.
Click on each type of precipitation.
The clouds get heavy and water falls back to the earth in the form of rain, hail, sleet or snow.

6. Types of Precipitation - Rain
Most common
Mist and drizzle are forms of rain
1cm of rain =10 cm of snow

7. Type of Precipitation - Snow
Water vapor in a cloud turns directly into ice crystals called snow flakes
Snow flakes have different shapes and patterns but all have 6 sides

8. Type of Precipitation -Hail
Round pellets of ice larger than 5mm
Forms only in cumulonimbus clouds
Formed by up drafts

9. Type of Precipitation - Freezing Rain
Rain that freezes when it touches a very cold surface, like cars, trees, roads, etc.

10. Type of Precipitation - Sleet
As rain drops fall through cold air below 0oc, they freeze before they hit the ground

11. Drought
Long period of unusually low precipitation

12. Rain Gauge Meteorologists measure rainfall with a rain gauge.
A rain gauge is an open-ended can or tube that collects rainfall.
10 cm of snow equals about 1 cm of rain.
Meteorologists are scientist who study weather.