WEATHER AXD CLIMATE 159 



6. What causes day and night? 



7. Why do day and night vary in length? 



8. How many degrees is the inclination of the 

 earth's axis to the plane of its orbit? 



9. What is the position of the earth with reference 

 to the sun on June 21? September 22? December 21 

 and March 21? 



10. Has climate in any way affected the distribution 

 of man ? 



11. How are weather maps made? 



12. Of what value are weather maps? 



13. What are isobars? Isotherms? 



14. Are weather forecasts generally correct ? 



15. Why is it sometimes difficult to make accurate 

 weather predictions ? 



16. Of what value are weather forecasts? 



17. Is the government justified in maintaining 

 weather bureaus? 



18. Where is the weather station located which is 

 nearest to the place in which you are living? 



