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Topographic Maps
vocabulary and terms
17
Science
7th Grade
02/18/2010

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Term
conic projection
Definition
map made by projecting points and lines from a globe onto a cone
Term
topographic map
Definition
map that shows the changes in elevation on Earth's surface and indicates such features as roads and cities
Term
contour line
Definition
line on a map that connects points of equal elevation
Term
map scale
Definition
relationship between distances on a map and distances on Earth's surface that can be represented as a ratio
Term
map legend
Definition
explains the meaning of symbols used on a map
Term
index contour
Definition
a contour line that includes an elevation label
Term
cross
Definition
Contour lines never ___________.
Term
hachures
Definition
short lines drawn at right angles to the contour line. They help indicate hills or basins
Term
relief
Definition
the difference in elevation between the highest and lowest points in a landscape
Term
depression contour
Definition
a contour line with hachure marks to indicate a depression or hollow
Term
contour interval
Definition
the change in elevation between two adjacent (side by side) contour lines.
Term
geologic maps
Definition
show the arrangement and types of rocks at Earth's surface
Term
Latitude
Definition
distance in degrees north or south of equator. These lines are parallel to equator or horizontal
Term
Longitude
Definition
distance in degrees east or west of the prime meridain. These lines are vertrical on globe/map.
Term
Prime Meridian
Definition

imaginary line that represents 00 longitude and runs from the north pole to the south pole

Term
Equator
Definition
imaginary line that wraps around Earth at 00 latitude, halfway between the north and south poles.
Term
percent grade
Definition
the slope of a surface or line
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