|  | Pre-EventConcepts, Skills, Glossary, and Timeline
Include the following when preparing your students for the videoconference: Concepts - Hot air rises.
- Rising air expands and cools.
- As air rises, surface air pressure is lowered.
- Air travels from high to low pressure.
- Cool air holds less moisture than warm air.
- Weather in the Northern Hemisphere generally moves from west to east.
Skills - Construct and read a line graph.
- Use a map key, including scale of miles.
- Use a compass rose.
Glossary - Air mass
- Cold front
- Dew point
- Fahrenheit and Celsius
- High pressure system
- Isobars and Isotherms
- Jet stream
- Low pressure system
- Millibar
- Nor'easter
- Relative humidity
- Saturation
- Unstable air
- Warm front
- Wind chill
Timeline
Follow these guidelines when preparing your students for the videoconference:
- Teach a weather unit of your choice.
- Familiarize yourself with the STORM-E web site.
- Schedule the videoconference online at www.e-missions.net.
- View Weather Extra pages.
- Use the days 1 - 3 materials on this web site with students before the videoconference. (Note: Day 4 materials are password protected and used only during the videoconference.)
- Group students one of two ways:
- Group by topic teams of air pressure, humidity, wind, and temperature. Limit the team size to no more than four students per team. Make multiple topic teams to accommodate your class size. For example, you might have two temperature teams, two humidity teams, one wind team, and one air pressure team for your class.
- Group by weather channel teams. Each weather channel team will consist of eight students: two air pressure, two humidity, two wind, and two temperature experts. These teams will create a team name, like WFOG or WSKY. These teams compete to be the first channel to report any breaking weather updates to Weather Central during the videoconference.
- Student teams prepare a short oral report after using the days 1 - 3 maps and data found at this web site. Each team will select a representative to give their oral presentation to Weather Central at the beginning of the videoconference.
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