5Latitude (x axis) & Longitude (y axis) - Coordinate system used to locate places on EarthALWAYS stated first(x) Latitude: measured in degrees, North & South of Equator- think “laddertude” (rungs of a ladder)** lines of latitude are also called parallelshorizontal linesMaximum latitudes: 900 N (north pole) & 900 S (south pole)Reference line = Equator (00)Always has # and direction (examples: 490 N; 320 S)
6Latitude (x axis) continued There are 2 ways to get latitude: 1) with reference to center of Earth2) with reference to PolarisPolaris & latitude: altitude / angle to Polaris = your latitudeIf on the same latitude: 1) all see Polaris at same angle2) all have same length of dayNH = Northern Hemisphere SH = Southern HemisphereFYI: 10 of latitude ~ 111 km
7Longitude (y axis)ALWAYS stated secondALWAYS stated second(y) Longitude: measured in degrees, East & West of the Prime Meridian (Greenwich, England)** lines of longitude are also called meridiansReference line: Prime Meridian (00) / GMTGreenwich Mean Time** A chronometer is a very accurate clock used to find longitude by finding the time difference from 00 longitude.GMT is the time in Greenwich, England from which all longitude is calculated E or W of the Prime Meridian based on 15o per hour of difference from GMT.
8Longitude (y axis) continued International Date Line (IDL): 1800If you go West over the IDL, add a dayIf you go East over the IDL, lose a dayIf on the same longitude: 1) same time2) all will see high noon at the same timeRotational rate = Distance = 3600 = / hourTime hrsMemorize this1 rotation per 24 hours
9Longitude (y axis) continued Rotational rate = Distance = 3600 = / hourTime hrsMemorize thisEarth is broken into 24 equal time zones, all 150 apart with 1 hour differenceEarlierLater
1560 minutes! 60 seconds! Dividing degrees How many minutes in an hour? Guess what a degree is divided into (in latitude / longitude)?60 minutes!How many seconds in a minute?Guess what a minute is divided into (in latitude / longitude)?60 seconds!
16NYS Latitude / Longitude Page 3 ESRTs – RULER TIME See next page in your notes for referenceSee next page in your notes for referenceSee next page in your notes for reference
17Latitude / Longitude ctd Page 11 of your notes packet: Add the minutes and seconds you see below
18Southwestern United States Latitude & Longitude –Southwestern United States
19Latitude / Longitude ctd Use page 3 of the ESRTs to complete the following table on PAGE 11 in your notes packetLocationLatitudeLongitude430 5’ N760 10’ W420 45’ N730 40’ W440 10’ N730 55’ W420 5’ N750 55’ W790 15’ WRiverheadSlide MountainOswegoWatertownBuffaloSyracuseAlbanyMt. MarcyBinghamtonJamestown400 50’ N720 35’ W420 N740 20’ W430 25’ N760 25’ W430 55’ N750 55’ W420 50’ N780 50’ W
24Latitude / Longitude Lab – Reality Check Greenwich Mean Time (GMT)Greenwich Mean Time: the time in Greenwich, England from which all Longitude is calculated east & west of the Prime Meridian using 15o / hour of difference from GMT.
25Latitude / Longitude Lab – Reality Check 2o driving in North Dakota vs. Texas2o = 2o but meridians (lines of longitude) are farther apart the closer to the Equator you are. Since Texas is closer to the Equator than South Dakota is so you would physically travel farther in Texas driving 2o east. *** LOOK AT THE GLOBES **
26Latitude / Longitude Lab – Reality Check DESCRIBE how to use latitude and longitudeYou would measure latitude north or south of the Equator in degrees (latitude is ALWAYS listed first)then you would measure longitude east or west of the Prime Meridian in degreesLatitude and longitude give the coordinates to pinpoint any location on Earth.