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Naval Skills Unit Four Chapter Three Extra Credit

Short Answer
 

 1. 

What is a chronometer?
 

 2. 

What do A.M and P.M. mean?
 

 3. 

Why do the Navy and other armed services use the twenty-four-hour clock?
 

 4. 

How did telling time by a ship’s bell originate?
 

 5. 

What is the basic relationship between longitude (arc) and time?
 

 6. 

What is mean solar time?
 

 7. 

How is each time zone identified?
 

 8. 

How does the International Date Line define the time on each side of the 180th meridian?
 

 9. 

What is daylight savings time?
 

 10. 

What is the zone description (ZD) of Greenwich, England?
 



 
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