Wind and Weather 147 



3. State the effect of the rotation of the earth on the direction the wind 

 blows in the northern hemisphere. 



4. Describe the belt of equatorial calms. 



5- State the location and the course of the trade winds; the anti-trade 

 winds. 



6. Describe the origin and benefits of the prevailing westerlies. 



7. Describe the origin of cyclones. 



8. Account for the formation of land breezes; of sea breezes. 



9. Describe an aneroid barometer. 



10. Does the arrowhead of a weather vane point in the direction of the 

 wind, or against it? 



11. How would a lack of wind affect our lives? 



12. Suggest some possible causes of whirls and gusts of wind close to 

 the ground. 



13. Why is a window sometimes blown out instead of in during a 

 heavy wind? 



14. Why is it dangerous for an airplane to fly close to mountain cliffs? 



15. Mention several benefits to the country as a result of the work of the 

 Weather Bureau. 



16. Give the conditions of an ideal climate, 



17. How is it that sometimes two clouds are seen drifting in different 

 directions? 



18. What is a northwesterly wind? 



PROJECTS 



1. Construct a local weather chart based on personal observations. 



2. Make a weather map and explain it. 



3. Construct a weather vane and show how it works. 



OUTDOOR OBSERVATION 



1. Send up several toy balloons under different weather conditions and 

 record observations of drifts and heights reached. 



2. Observe a weather vane at regular intervals for a week and record 

 wind directions. Record cloud or storm conditions at the same 

 timejs. 



3. Observe and record visible effects of wind. 



REFERENCES 



Whirlwinds and Cyclones Davis 



Re'ading the Weather Longstreth 



