Maps Flashcards
Meridian of Longitude
One hundred eighty equally spaced reference circles on the globe representing the Earth. “Great circles” all approx. the same size. Run from the North to South pole. Perpendic. to the Equator.
Parallel of Latitude
One hundred eighty equally spaced circles (varying in size; small at the poles, increasing to largest at the Equator), which run horizontal (parallel) to the Equator encircling the globe.
One degree of longitude at the Equator measures approx. ___ miles. It is further divided into __, each of which is divided into ___
70 miles
60 minutes
60 seconds
The length of a degree of longitude ___ as you approach either pole because ___. At the poles the length is ___ because ___
decreases
meridians become closer together
zero
meridians all meet at the same point
Prime Meridian
Runs through Greenwich, England, just outside London. Has value of zero degrees of longitude. All other meridians are measured in degrees of longitude east or west of the Prime Meridian.
The Equator has a value of ___ degrees of latitude. Locations not on the Equator are measured in degrees ___ and ___ latitude
Zero
North and South
One degree of latitude is approx. ___ miles and ___ front the Equator to the North and South poles. Each degree is divided into ___ and further into ___
70 miles
Remains the same
60 minutes
60 seconds
Mercator Projection
A method of transferring the features of the Earth from a sphere to a two-dimensional, flat map. All parallels of latitude run east-west and longitude fruns north-south. Latitude and longitude lines are perpendicular, and the areas of land masses closer to the poles are distorted relative to those nearer the Equator
Conic projection
A method of transferring the features of the Earth from a sphere to a flat surface where lines of longitude are shown to converge, as they do on a globe
Topographic map
A map showing the physical features of the surface of the earth useful for hikers that shows the shape of the land
The __ helps us measure distances in miles on a map. ____ ____ show the shape of land masses on topographic maps. A contour interval is the distance between two ____
Map scale
Contour lines
Contour lines