Weather Maps

4. A tool that shows the wind direction.
7. Global air circulation patterns within the atmosphere held to Earth by gravity and warmed as heat radiates from Earth.
10. A device that measures temperature.
11. The amount of moisture in the air.
12. The boundary between an advancing warm air mass and a receding cooler air mass.
14. A map or chart that shows the weather conditions at a specific point in time over a specific region.

1. An air mass with less atmospheric pressure than the surrounding air masses.
2. A tool that measures air pressure.
3. The day-to-day state of the atmosphere.
5. A body of air over a vast area that has characteristics of pressure, temperature, and humidity.
6. A tool that shows the speed of the wind.
8. An air mass with a greater atmospheric pressure than the surrounding air masses.
9. The border between an advancing air mass and a retreating warm air mass.
13. The force exerted by the atmosphere on Earth's surface by the weight of the air above the surface.