Latitude/Longitude
1 degree
60 nautical miles, or 60 minutes
What happens to latitude traveling from LA to Pleasant Hill?
Latitude increases.
east and west of the Prime Meridian
Lines of longitude run _____________________.
What happens to longitude traveling from LA to NY?
Longitude decreases.
How do you know where you are without your GPS?
Maps use a simple coordinate system, but are flat.
North Star
Polaris
Zero degrees longitude
Prime Meridian at Greenwich.
hemispheres
The Equator divides the earth into halves, called _______________________.
Eratosthenes
The original inventor of Latitude and Longitude. 2nd librarian at Alexandria.
Describe lines of longitude.
Vertical lines that are long.
equator
What is the 0 degree line of latitude called?
Prime Meridian
What is the 0 degree line of longitude called?
Zero degrees latitude
Equator
Exploration and voyaging limited mainly by ___ skills and ____.
navigation/technology
How to measure latitude
1. Find the North Star. 2. Point arm parallel to the horizon. 3. Measure the angle between Polaris and the horizon.
What are the 4 time zones?
1. Pacific Standard 2. Mt. Standard 3. Central Standard 4. Eastern Standard
What is the longitude at DVC?
122 degrees W. long.
What is the latitude at DVC?
37 degrees N. lat.
How many time zones in the US?
4
globe
A __________ is the most accurate way to represent the earth.
parallels
Another name for lines of latitude is _________________.
meridians
Another name for lines of longitude is ______________________.
Describe lines of latitude.
Horizontal lines that go across like steps of a ladder.
Lines of latitude
Imaginary lines that run east and west, they tell how far north and south of the equator (also called parallels). Parallel to equator. Horizontal lines (think lateral, side to side).
evenly spaced/poles/equator
Latitude lines are ____ ____, but Longitude lines are closer together at the ____ and farthest apart at the ____.
Measure latitude
Zero degrees at the equator. 90 degrees N at the North Pole. 90 degrees S at the South Pole.
Hipparchus
divided Earth into 360º (degrees) i.e. evenly spaced lines
Lines of longitude
imaginary lines that run north and south on map or globe, they tell how far east and west of the prime meridian ( also called meridians). Perpendicular to equator. Vertical lines (from pole to pole).
Ptolemy
later further divided these degrees into minutes (') and seconds (") of arc.
Earth addresses
via coordinate system
east to west
Lines of latitude run ________ to _______.
east and west
Lines of latitude run_______________________.
north to south
Lines of longitude run ________ to __________.
What is our time zone?
Pacific Standard
Why do we have time zones?
Sunrise and sunset are different at different locations on Earth.