Vocabulary on Wind

 

1. Wind

The horizontal movement of air from an area of high pressure to an area of low pressure.

 

2. Anemometer

An instrument that measures wind speed.

 

3. Wind-Chill Factor

 The increased cooling that a wind can cause.  Wind removes body heat.

 

4. Local Winds

 Winds that blow over short distances caused by the uneven heating of Earth over short distances - usually at shore lines.

 

5. Sea Breeze

A local wind that blows from an ocean or lake toward land - it occurs because during the day the land is hotter than the water.

 

6. Land Breeze

local wind that blows from land  toward an ocean or lake - it occurs because during the night the water is hotter than the land.

 

7. Global Winds

Winds that blow steadily over long distances caused by the uneven heating of Earth.

 

8. Global Convection Currents

Temperature differences between the poles and the equator cause giant convection currents - air in the lower atmosphere moves from the poles toward the equator; in the upper atmosphere air moves toward the poles. 

 

9. The Coriolis Effect

The way the Earth rotates causes global winds to curve.  In the North they curve right, in the South they curve left.

 

10. Doldrums

This is an area of calm, no wind, found at the 0 latitude or the equator.

 

11. Horse Latitudes

This is an area of calm, no wind, found at the 30 latitude.

 

12. Trade Winds

The global wind belt between 0 latitude and 30 latitude in the northern and southern hemispheres.  The come from the East and they blow West.

 

13. Prevailing Westerlies

The global wind belt between 30 latitude and 60 latitude in the northern and southern hemispheres.  They come from the West and they blow East

 

14. Polar Easterlies

The global wind belt between 60 latitude and 90 latitude in the northern and southern hemispheres.  They blow west.

 

15. Jet Streams

Large bands of high speed winds, hundreds of kilometers wide, that blow 10 km. above Earth's surface.  They blow about 200-400 km per hour.

 

16. Wind Vane

An instrument that tells wind direction