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If you are located on zero degrees latitude, then you are on the __________________.
equator
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Lines of longitude run ________ and _________.
north, south
-
The prime meridian lies at ____ degrees _________________.
0, longitude
-
The prime meridian passes through ____________, England.
Greenwich
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Longitude is measured in degrees ________ or ________ of the prime meridian.
East, West
-
Latitude is measured in degrees _______ or ________ of the equator.
North, South
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One degree of latitude equals
3600 seconds
-
One minute of longitude equals
60 seconds
-
One degree of longitude equals
60 minutes
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Topographic maps that are bounded by lines of latitude and longitude are called
____________ maps.
quadrangle
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How many 7.5 minute quadrangles occur within a 15 minute sheet?
4
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Where would you find the title of a 7.5 minute quadrangle?
top right corner
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Where would you find the scale of a 7.5 minute quadrangle?
middle lower margin.
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A 7.5 minute quadrangle covers how many degrees of longitude and latitude?
7.5 minutes of both longitude and latitude
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On a 7.5 minute quadrangle where can information about magnetic declination be found?
lower left margin.
-
How many feet are there in an inch on a map if the scale is 1:24000?
- 2000 feet in an inch - Use the relationship that there are 12 inches in a foot. Hence, 24000
- inches divided by 12 inches yields 2000 feet.
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How many feet are there in an inch on a map if the scale is 1:12000?
1000 feet. See answer to question 24 for explanation of how to calculate this value.
-
Magnetic North lies in what direction relative to geographic North if the magnetic
declination is 14 degrees East?
14 degrees east of geographic north
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What is the Bruton compass used to measure?
directions
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The North end of the compass needle ALWAYS points toward what direction?
magnetic North
-
If the magnetic declination is properly adjusted, then when the compass needle reads zero
degrees, the sighting arm points in what direction?
North
-
The index pin is used to adjust what feature on the Bruton compass?
The index pin is used to adjust the circular grid for magnetic declination
-
Is magnetic North a stationary fixed point on the globe?
No, magnetic North is constantly moving.
-
Topographic contour lines that are closer together than other contour lines indicate what?
steeper slopes
-
If you were asked what do individual topographic contours on a given 7.5 minute
quadrangle indicate, how would you respond?
- Each topographic contour represents a curve of equal elevation. In other words, if you were
- to walk along a given contour, then you would be walking along a horizontal surface
-
What do contour lines that are uniformly spaced indicate?
a constant slope
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