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

Latitude and Longitude

Latitude & Longitude

What is the blue line on this globe called?

Equator!

Latitude & Longitude

What is the yellow line on this globe called?

Prime Meridian

Latitude & Longitude continued

Latitude (x axis) & Longitude (y axis)

(x) Latitude: measured in degrees, North & South of Equator

- Coordinate system used to locate places on EarthALWAYS

stated first

- think “laddertude” (rungs of a ladder)

horizontal lines ** lines of latitude are also called parallels

Maximum latitudes: 900 N (north pole) & 900 S (south pole)

Reference line = Equator (00)

Always has # and direction (examples: 490 N; 320 S)

Latitude (x axis) continued

There are 2 ways to get latitude:1) with reference to center of Earth2) with reference to Polaris

FYI: 10 of latitude ~ 111 km

Polaris & latitude: altitude / angle to Polaris = your latitude

If on the same latitude:1) all see Polaris at same angle2) all have same length of day

NH = Northern HemisphereSH = Southern Hemisphere

Longitude (y axis)

(y) Longitude: measured in degrees, East & West of the Prime Meridian (Greenwich, England)

ALWAYS stated second

Reference line: Prime Meridian (00) / 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 00 longitude.

ALWAYS stated second

Greenwich Mean TimeGMT 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.

Longitude (y axis) continued

If on the same longitude:1) same time2) all will see high noon at the same time

International Date Line (IDL): 1800

If you go West over the IDL, add a day

If you go East over the IDL, lose a day

Rotational rate = Distance = 3600 = 150 / hour

Time 24 hrs

1 rotation per 24 hours

Memorize this

Longitude (y axis) continued

Earth is broken into 24 equal time zones, all 150 apart with 1 hour difference

Earlier Later

Rotational rate = Distance = 3600 = 150 / hour

Time 24 hrs Memorize

this

Stop!

Latitude / Longitude Intro

BOTH sides: start with latitude

and then…

Latitude / Longitude

Worksheet 03-2L

Dividing degreesHow 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!

NYS Latitude / LongitudePage 3 ESRTs – RULER TIME

See next page in your notes for reference

See next page in your notes for

reference

See next page in your notes for

reference

Latitude / Longitude ctd

Page 11 of your notes packet: Add the minutes and seconds you see below

Latitude & Longitude –Southwestern United States

Latitude / Longitude ctd

Use page 3 of the ESRTs to complete the following table on PAGE 11 in your notes packet

Location Latitude Longitude

430 5’ N 760 10’ W

420 45’ N 730 40’ W

440 10’ N 730 55’ W

420 5’ N 750 55’ W

420 5’ N 790 15’ W

Riverhead

Slide Mountain

Oswego

Watertown

Buffalo

Syracuse

Albany

Mt. Marcy

Binghamton

Jamestown

400 50’ N

420 N

430 25’ N

430 55’ N

420 50’ N

720 35’ W

740 20’ W

760 25’ W

750 55’ W

780 50’ W

Homework: Lat / Long Practice (18 – 30)

Homework: Lat / Long Practice (18 – 30)

Latitude / Longitude Lab



Phone a friend at 6 am?

Remember: Rotational rate = 150 / hour

Longitude / Time Zone Problems





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 15o / hour of difference from GMT.


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 **


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.

Maps including Lat. / Long.

Documents

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