1. Weather and Climate Unit Vocabulary

2. Weather
Short-term conditions.

3. Climate
Long-term conditions (hot/cold, wet/dry)

4. Latitude
Distance from the equator, north or south, measured in degrees

5. Altitude/Elevation
Distance above sea level

6. Convection Current
Hot, less dense air rising, cold, more dense air sinking

7. Water Vapor
The gas form of water.

8. Troposphere
The first layer of atmosphere where weather occurs.

9. Thermometer
measures air temperature in degrees Celsius.

10. Barometer
measures air pressure in millibars (mB) and inches of mercury (in. Hg)

11. Anemometer
measures wind speed

12. Psychrometer
measures humidity.

13. Air Pressure
The pressure exerted by air in a vertical column.

14. Sea Breeze
Wind blowing from the sea during the day time

15. Land Breeze
Wind blowing from land during night time.

16. Dew Point
Temperature at which water vapor condenses.

17. Relative Humidity
Amount of water vapor in the air, compared to how much it could hold.

18. Saturation
100% relative humidity

19. High Pressure System
Cold and dry weather conditions

20. Low Pressure System
Hot and wet weather conditions

21. Fronts/Frontal Boundary
Place where 2 air masses meet

22. Air Mass
1000 square mile mass of air with the same characteristics