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25 Cards in this Set

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what does a map tel u when contour lines are close together?
steep slope
when contour lines are far apart?
gentle slope
what do contour lines indicate?
the landscape's elevation, or heigh above sea level, on a topographic map
what do topographic maps show?
natural and human-made features of an area
what do contour lines connect?
points of equal elevation
what do contour lines connect?
points of equal elevation?
field
an area that can be measured
can field values change in time?
yes
vector field
magnitude and direction
examples of vector fields
wind, ocean currents, gravity, magnetic fields
scalar field
only magnitude (#)
examples of scalar field
elevation, air pressure, temperature field
isotherms
join points w/ temperatures of equal value
map
scaled model of an area
what is shown on a topographic/contour map
elevation (slope)
what does blue indicate on a contour map?
water
brown
interstate highways
black
state borders
red
important buildings
green
forests
what is a relief map
map that shows elevation and height
what is a contour line?
gives us shape of land anad joins points of equal elevation
contour interval
difference in elevation between two contour lines
3 ways to tell which direction a river is flowing
1. high to low elevation
2. river will always flow in the direction opposite to the way the contour lines bend or point
3. rivers always flow into an ocean
gradient formula
change in field value
over
distance