# Geology

 If you are located on zero degrees latitude, then you are on the __________________. equator Lines of longitude run ________ and _________. north, south The prime meridian lies at ____ degrees _________________. 0, longitude The prime meridian passes through ____________, England. Greenwich Longitude is measured in degrees ________ or ________ of the prime meridian. East, West Latitude is measured in degrees _______ or ________ of the equator. North, South One degree of latitude equals 3600 seconds One minute of longitude equals 60 seconds One degree of longitude equals 60 minutes Topographic maps that are bounded by lines of latitude and longitude are called ____________ maps. quadrangle How many 7.5 minute quadrangles occur within a 15 minute sheet? 4 Where would you find the title of a 7.5 minute quadrangle? top right corner Where would you find the scale of a 7.5 minute quadrangle? middle lower margin. A 7.5 minute quadrangle covers how many degrees of longitude and latitude? 7.5 minutes of both longitude and latitude 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. 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 What is the Bruton compass used to measure? directions 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 Authorlolita91 ID43845 Card SetGeology DescriptionTest 3 Updated2010-10-20T23:58:01Z Show Answers