Latitude and Longitude

Vocab

• Latitude• Longitude• Meridian• Parallel• Tropics• Poles• Greenwich mean time (GMT)

Coordinate system• If I were to ask from directions from the front

door to the back door, what would you say?– Floor?

Coordinate System• Parallel =

Latitude

• Meridians = Longitude

Important Lines• Latitude (Parallel):

– parallel lines that don’t touch and measure N&S but run E&W

• Equator (0o): – Main reference line in middle of earth, runs east and west.

• Longitude (meridians):– not parallel lines that touch at the poles and measure E&W

but run N&S• Prime Meridian (0o):

– Main reference line for longitude, runs north and south.

• International Date Line (180o): – opposite side of earth from Prime Meridian.

Tropic of Cancer 23.5 oN

Tropic of Capricorn 23.5 oS

Now let’s be more exact!

• Look at the clock. How many minutes are there in an hour?– 60 minutes

• How many seconds are in a minute?– 60 seconds

• Lat/Long is the same way.1 degree = 60 minutes 1 minute =60 seconds

43o 00’ N

42o 00’N

77 o W

76 o W

42o 60’ N

Draw all latitude (41, 42, 43, 44, 45) and longitude (72, 73, 74, 75, 76, 77, 78, 79)

What is LAT of Syracuse

What is Longitude of Syracuse

Ithaca?

Time Zones• Earth

Rotates 15o per hour

• GMT =Greenwich Mean Time