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notes

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
        Help!  

Question
Answer
are reference points in the earth's surface   North and South poles  
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divides the Earth into North and South hemispheres   equator  
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lines that run East and West parallel to the Equator   parallels  
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the angular distance North or South of the equator   latitude  
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each degree of latitude is _ miles and _ km   111 m. 66.6 km  
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minute sign   '  
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minute equals _ km   1.85  
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minute equals _ mi.   1.11  
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sign for seconds   ''  
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51 seconds of latitude is _   38 degrees, 53'51''N  
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lines that run from pole to pole   meridian  
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angular distance between East and West of the Prime Meridian   longitude  
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between the longitudes and the equator= _ km   111  
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between the poles and the equator, there are_km or miles   20km or 12 miles  
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any line that circles the Earth and divides the earth into halfs; used in navigation   The Great Circle  
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has an exact match - creates great circles   lines of longitude  
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piece of a circle   arch  
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nautical mile=   1 minute of latitude or longitude  
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Nautical miles apply to the _. Why?   air or seas- fluids  
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Statute mile =   land mile  
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liquid or a gas   fluid  
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_ nautical miles between each   69  
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difference between nautical miles and statute mile   obstacle and curves up and down- statutestraight- nautical  
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very fast spur of air   jet stream  
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points on the earth surface that a compass needle points to located at the tilted axis   geometric poles  
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straight up and down   geograohic north pole(true north)  
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Earths geographic poles are on the ____.   axis  
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Earths magnetic poles are on the _____.   points on the Earth's surface where magnetic fields are strongest  
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the angle between the direction of the geographic pole and the direction in which the compass needle points   magnetic declination  
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nautical mile =   1 minute of an arc or a meridian or 6076 feet  
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each degree of latitude =   111 km or 69 miles  
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unit of speed that is = to one nautical m/h   knot  
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knot =   1.51 mph  
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a vessel traveling one knot along the meridian travels ____ of geographical latitude in 1 hour   1 minute  
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statute mile= _ feet   5280  
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metric mile =   1500 meters  
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a flat map that represents the 3D curved surface on a globe   map projection  
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to throw out or cast forward such as a light on a screen   project  
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name the three most common map projections   Mercator,Gnomonic,Conic  
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distortions are always present when a __ object is projected onto a __ surface   round; flat  
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Mercator projection =   cyndrilical  
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How mercator projection is made-   wrap a cylinder of paper around a lighted globe  
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the distortion for a mercator projection   areas near the poles have the greatest distance,because meridians appear a straight lines  
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the advantage of a mercator projection-   all compass directions are straight  
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How Gnomic is made-   a sheet of paper touching a lighted globe at one point  
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distortions of a Gnomic projection-   point that paper touches is very accurate; everything else is distorted  
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advantages of a Gnomic projection-   used in navigation when plotting Great Circles- especially plotting North Pole  
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How Conic projections are made-   paper cone placed over a lighted globe at a particular location  
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disortions of a Conic projection   get 1 particular location and everything else is distorted  
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advantages of a Conic projection   get a clear and up close view of a particular location  
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legend =   map key  
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