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 Absolute Location

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PostSubject: Absolute Location   Absolute Location Icon_minitimeMon May 11, 2020 4:36 pm

Absolute Location


Cross-Curricular Focus: History/Social Sciences


Where on Earth are you? Navigators use lines of latitude and lines of longitude to locate


 places. Lines of latitude run east and west around Earth. On a map or globe, these lines


 appear as running sideways or horizontally. Lines of longitude run north and south around


 Earth. These lines go up and down or vertically on a map or globe. These lines create an


 imaginary graph paper on the Earth. They make it possible to fi nd an absolute, or exact,


 location on Earth. They even allow us to give an absolute location to a place out in the 


middle of the ocean. Lines of latitude tell us how far north or south of the Equator we are.


 Sailors have used primitive navigation tools, like astrolabes, since ancient times. 


The astrolabe uses the sun and stars to fi nd an approximate location. Using such 


tools, they have been able to approximate their distance from the equator. Although


 their instruments may not have been the high quality we have now, they were incredibly 


accurate for their time. Lines of longitude tell us how far east or west of the prime 


meridian we are. Sailors constantly looked for new ways to increase their navigation 


skills. Still, it wasn’t until the 18th century they were able to measure degrees of 


longitude. They would have been very envious of the technology available to us today.


 When we use lines of latitude and longitude together, we can get a very precise location.


 If we want to identify the absolute location of a point, we look where the latitude and


 longitude lines cross nearest to that point. We use the coordinates for that point as


 its address. Many maps today include degrees of latitude and longitude. Another


 tool that helps us navigate is the magnetic compass. The magnetic compass was 


developed in China. In medieval times, sailors brought it from China to Europe during


 their regular trade expeditions to Asia. This technology made worldwide travel easier


 and encouraged more exploration.





 Answer the following questions based on the reading passage. 
Don’t forget to go back to the passage whenever necessary to find or confirm your answers. 


1) What is the function of lines of latitude and longitude?


_______________________________________ 


_______________________________________ 




2) Which imaginary lines run north and south?
 _______________________________________ 

_______________________________________




 3) Which imaginary lines are based on the Equator? 
_______________________________________ 
_______________________________________




4) Explain what is meant by an absolute location.
 _______________________________________ 
_______________________________________ 




 5) In your opinion, which invention was more important: 


the astrolabe or the magnetic compass? Why?



_______________________________________ 
_______________________________________ 
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PostSubject: Re: Absolute Location   Absolute Location Icon_minitimeMon May 11, 2020 4:40 pm

key:
Actual wording of answers may vary.

1. to allow us to find an absolute location of a point on Earth
2. longitude
3. latitude
4. It is an address of longitude and latitude of a place on Earth
5. student’s choice
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