Transcript Latitude and Longitude - Monroe

Unit #1:
Measuring The
Earth
Latitude
• Parallel Lines on
flat map.
• Concentric
circles on a
globe as viewed
from the North
Pole
Latitude
• The angular distance North or South of the
Equator.
• Latitude Lines are called parallels
• Equator = 0⁰
• New York 42⁰N
• North Pole = 90⁰ N
• South Pole = 90⁰ S
Angular Distance North or South of
the Equator
*Important Lines of Latitude*
• Equator = 0⁰
• Tropic of Cancer = 23.5⁰N
• Tropic of Capricorn = 23.5⁰S
• Arctic Circle = 66.5⁰N
• Antarctic Circle = 66.5⁰S
• North Pole = 90⁰N
• South Pole = 90⁰S
Longitude
• Angular Distance East or West of the Prime
Meridian
• Prime Meridian(Greenwich England) = 0⁰
• International Dateline = 180⁰
• Every 15⁰ of Longitude = 1 hour time difference
• 45⁰ =
________hrs
• 5 hrs = ________⁰
• East is later
• West is Earlier
Calculating your Longitude
• If a sailor is at 75⁰W longitude and it is
noon at his location. What time is it GMT
• 75/15 = 5hrs West is earlier GMT= 5pm
• If it is 3pm GMT and it is 7pm at your
location, what is your longitude.
• 3pm to 7pm is 4 hours
• 4 X 15 = 60 Later is East You are at 60⁰E
General Ideas on Longitude
• Longitude Lines meet at the
poles.
• Largest Longitude is 180⁰
• Hemispheres
–Western
–Eastern
New York State and USA
• Approximate Latitude of New
York = 42⁰N
• Approximate Longitude of
New York = 74⁰W
Important Lines of Longitude
• Prime Meridian
• International Dateline
Earth seen from Apollo 17
Earth seen from Clementine
Earth seen from Galileo