Latitude, Longitude, and Time September, 2011 Coordinate System A system used for determining the coordinates of a point. Coordinates = Numbers Latitude.

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Presentation transcript:

Latitude, Longitude, and Time September, 2011

Coordinate System A system used for determining the coordinates of a point. Coordinates = Numbers Latitude and Longitude System is used to locate points on Earth.

Latitude The angular distance north or south of the Equator. –Measured in degrees N or S from the Equator. –There are 90° N and 90° S. –Each degree has 60’ (minutes). The Equator is the middle line of latitude between the North and South Pole. –Equator = 0° latitude

Longitude The angular distance E or W from the prime meridian. –Measured in ° E or W. –There are 180° E and 180° W. –Each ° has 60’ (minutes.) Each meridian (line of longitude) connects the North and South Poles.

Longitude Cont... The meridian that passes through Greenwich, England is the Prime Meridian. –Prime Meridian = 0° longitude The meridian that is 180° is the international date line. –International Dateline = 180° longitude

Draw and label the EQUAOTR. EQUATOR 0° Latitude!

Draw and label the PRIME MERIDIAN. PRIME MERIDIANPRIME MERIDIAN 0° Longitude!

Draw and label the TROPIC OF CANCER. TROPIC OF CANCER 23.5° N Latitude!

Draw and label the TROPIC OF CAPRICORN. TROPIC OF CAPRICORN 23.5° S Latitude!

Draw and label the ARCTIC CIRCLE. ARCTIC CIRCLE 66.5° N Latitude!

Draw and label the ANTARCTIC CIRCLE. ANTARCTIC CIRCLE 66.5° S Latitude!

Label the NORTH WEST Quadrant. PRIME MERIDIANPRIME MERIDIAN EQUATOR Label it N & W. N W

Label NORTH EAST. PRIME MERIDIANPRIME MERIDIAN EQUATOR Label it N & E. N W N E

Label SOUTH EAST. PRIME MERIDIANPRIME MERIDIAN EQUATOR Label it S & E. N W N E S E

Label SOUTH WEST. PRIME MERIDIANPRIME MERIDIAN EQUATOR Label it S & W. N W N E S E S W

Time There are 24 different time zones on Earth.

Time Cont… Each time zone is approximately 15 degrees of LONGITUDE apart. –360° ÷ 24hr = 15°/hr The Earth rotates on its axis 15°/hr –15° × 24 hr = 360°/day = 1 rotation/day The sun appears to move across the sky 15°/hr

Latitude & Longitude Directions Part A: Determine the latitude and longitude of each point on the map. –Use N or S for latitude –Use E or W for longitude Part B: Plot points W, X, Y, and Z using the given latitude and longitude.

Part A: Determine the Lat. & Long. of each point. 1.Point A = Lat._______ Long._______ 2.Point B = Lat._______ Long._______ 3.Point C = Lat._______ Long._______ 4.Point D = Lat._______ Long._______ Part B: Plot points W, X, Y, & Z 5. W = 10* S, 40* W 6.X = 0*, 140* W 7.Y = 40* N, 100* W 8.Z = 80* N, 0* A. B. C. D. 30° S 60° E 30° S60° E

Polaris (North Star) The altitude (height) of Polaris = your LATITUDE on Earth. –Ex. Polaris is 20° above the horizon, your latitude is 20°N.

Hop on board!

First stop, Central Park, NY!

Big Dipper Polaris Pointer Stars

Central Park, New York = 41 o N Big Dipper Polaris Pointer Stars Measure the altitude of Polaris.

What is the latitude of Central Park? Central Park, New York = 41 o N

Let’s travel to Tampa, Florida!

Tampa, Florida Big Dipper Polaris Pointer Stars Measure the altitude of Polaris. = 27°N

What is the latitude of Tampa? Tampa, Florida = 27 o N