##### Models of Earth Part of
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#### Complete list of Terms and Definitions for Models of Earth Part of

Terms Definitions
Elevation Height above sea level.
quadrangle USGS 7.5 minute topographic map
Globe A sphere that represents Earth's entire surface
Contour interval Difference in elevation between one contour line and the next
Isobars show places with the same atmospheric pressure on a weather map
slope the steepness of the landscape; rise over run
latitude distance north or south of the Equator, measured in degrees
Longitude Distance east or west of the prime meridian
Contour Lines narrow brown lines on topographic maps that indicate the landscapes elevation change
GPS made of 3 parts, the satellite, the receiver, and the master control station
magnetic declination the angle (at a particular location) between magnetic north and true north
Polyconic Projection Map made by fitting together a series of conic projections of adjoining areas.
Scale Used to compare distance on a map or globe to distance on Earth's surface
geomagnetic pole point on the earths surface above a pole of the earths imaginary internal magnet; the direction the needle points to on a compass, also known as "Magnetic North"
aerial photography photos taken from a plane, used to map areas quickly
How many degrees of latitude and longitude are used to represent Earth? longitude lines are numbered 0-180 degress East or West. Latitude lines are 9 degrees North or South
Physical models globe, model planes
cartography the science of making maps
gnomonic a circular projection that distorts the area away from the center
longitude_ north -south lines running between the poles ,used to measure distance in degrees east and west of the prime meridian ,from 0 at the prime meridian to 180 east and west .
parallel an imaginary line around the Earth parallel to the equator
Gnomonic Projection Map projection in which the parallels appear as unevenly spaced, concentric circles, the meridians appear as straight lines radiating from a central poing, and all other great circles appear as straight lines.
Prime Meridian longitude line that circles the widest part of the world
Symbol On a map, pictures used by mapmakers to stand for features on Earth's surface
prime meridian -- the imaginary line dividing earth's surfaces into eastern and western hemisphere establishe as 0 at greenwhich ,england ;the starting point for standars time zones....
true north the direction to the geographic north pole
Lunar eclipse When the earth comes between the sun and moon
Hemisphere One half of the sphere that makes up Earth's surface
conic map projection Good for smaller sections of Earth at a time with lines of latitude appear as straight lines and longitude curved.