Latitude, Longitude, and Time September, 2011 Coordinate System A system used for determining the...
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Transcript of Latitude, Longitude, and Time September, 2011 Coordinate System A system used for determining the...
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.
PRI
ME
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 MERIDIAN
EQUATOR
Label it N & W.
NW
Label NORTH EAST.
PRIME MERIDIAN
EQUATOR
Label it N & E.
NW
NE
Label SOUTH EAST.
PRIME MERIDIAN
EQUATOR
Label it S & E.
NW
NE
SE
Label SOUTH WEST.
PRIME MERIDIAN
EQUATOR
Label it S & W.
NW
NE
SE
SW
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* W6. X = 0*, 140* W7. Y = 40* N, 100* W8. Z = 80* N, 0*
A.
B.
C.
D.
30° S
60° E
30° S 60° 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 = 41o NBig
Dipper
Polaris
Pointer Stars
10
20
30
40
50
60
70
0
Measure the altitude of Polaris.
What is the latitude of
Central Park?
Central Park, New York = 41o N
Let’s travel to Tampa, Florida!
Tampa, Florida
0
10
20
30
40
50
60
70
Big Dipper
Polaris
Pointer Stars
Measure the altitude of Polaris.
= 27°N
What is the latitude of Tampa?
Tampa, Florida = 27o N