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Latitude and Longitude. Latitude & Longitude What is the blue line on this globe called? Equator!

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Presentation on theme: "Latitude and Longitude. Latitude & Longitude What is the blue line on this globe called? Equator!"— Presentation transcript:

1 Latitude and Longitude

2 Latitude & Longitude What is the blue line on this globe called? Equator!

3 Latitude & Longitude What is the yellow line on this globe called? Prime Meridian

4 Latitude & Longitude continued

5 Latitude (x axis) & Longitude (y axis) (x) Latitude: measured in degrees, North & South of Equator - Coordinate system used to locate places on Earth ALWAYS stated first - think “laddertude” (rungs of a ladder) horizontal lines ** lines of latitude are also called parallels Maximum latitudes: 90 0 N (north pole) & 90 0 S (south pole) Reference line = Equator (0 0 ) Always has # and direction (examples: 49 0 N; 32 0 S)

6 Latitude (x axis) continued There are 2 ways to get latitude: 1) with reference to center of Earth 2) with reference to Polaris FYI: 1 0 of latitude ~ 111 km Polaris & latitude: altitude / angle to Polaris = your latitude If on the same latitude: 1) all see Polaris at same angle 2) all have same length of day NH = Northern Hemisphere SH = Southern Hemisphere

7 Longitude (y axis) (y) Longitude: measured in degrees, East & West of the Prime Meridian (Greenwich, England) ALWAYS stated second Reference line: Prime Meridian (0 0 ) / GMT ** lines of longitude are also called meridians ** A chronometer is a very accurate clock used to find longitude by finding the time difference from 0 0 longitude. ALWAYS stated second Greenwich Mean Time GMT is the time in Greenwich, England from which all longitude is calculated E or W of the Prime Meridian based on 15 o per hour of difference from GMT.

8 Longitude (y axis) continued If on the same longitude: 1) same time 2) all will see high noon at the same time International Date Line (IDL): If you go West over the IDL, add a day If you go East over the IDL, lose a day Rotational rate = Distance = = 15 0 / hour Time 24 hrs 1 rotation per 24 hours Memorize this

9 Longitude (y axis) continued Earth is broken into 24 equal time zones, all 15 0 apart with 1 hour difference Earlier Later Rotational rate = Distance = = 15 0 / hour Time 24 hrs Memorize this

10 Stop!

11 Latitude / Longitude Intro BOTH sides: start with latitude and then…

12 Latitude / Longitude Worksheet 03-2L

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15 Dividing degrees How many minutes in an hour? How many seconds in a minute? Guess what a degree is divided into (in latitude / longitude)? Guess what a minute is divided into (in latitude / longitude)? 60 minutes! 60 seconds!

16 NYS Latitude / Longitude Page 3 ESRTs – RULER TIME See next page in your notes for reference

17 Latitude / Longitude ctd Page 11 of your notes packet: Add the minutes and seconds you see below

18 Latitude & Longitude – Southwestern United States

19 Latitude / Longitude ctd Use page 3 of the ESRTs to complete the following table on PAGE 11 in your notes packet LocationLatitudeLongitude ’ N ’ W ’ N ’ W ’ N ’ W ’ N ’ W ’ N ’ W Riverhead Slide Mountain Oswego Watertown Buffalo Syracuse Albany Mt. Marcy Binghamton Jamestown ’ N 42 0 N ’ N ’ N ’ N ’ W ’ W ’ W ’ W ’ W

20 Homework: Lat / Long Practice (18 – 30)

21 Latitude / Longitude Lab

22 Phone a friend at 6 am? Remember: Rotational rate = 15 0 / hour

23 Longitude / Time Zone Problems

24 Latitude / 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 15 o / hour of difference from GMT.

25 Latitude / Longitude Lab – Reality Check 2 o driving in North Dakota vs. Texas 2 o = 2 o 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 2 o east. *** LOOK AT THE GLOBES **

26 Latitude / Longitude Lab – Reality Check DESCRIBE how to use latitude and longitude You 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 degrees Latitude and longitude give the coordinates to pinpoint any location on Earth.

27 Maps including Lat. / Long.


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