Agenda: FRIDAY! Opening Activity Finish scale packages- 20 mins Reminder: Quiz Monday on Compass Rose Latitude and Longitude PPT and notes Agenda: FRIDAY!

1) How would you describe getting from your house to school? 2) How would you give directions to a remote spot on Earth?

Latitude and Longitude http://olc.spsd.sk.ca/DE/k9mod/Mapskill/mod3fl5.swf

History of Latitude and Longitude Historically, the most important practical application of latitude and longitude was to provide safe ocean navigation. History of Latitude and Longitude

The discovery of how to measure longitude accurately was among the important discoveries of the 1600s and 1700s. The tragic wrecking of the British fleet led by Sir Cloudesley Shovell led to the British Longitude Act, which created the Longitude Prize for anyone who could devise a practical method of determining longitude at sea. This was eventually achieved by John Harrison with his chronometer

Why are Latitude and Longitude measured in degrees? In the field of mathematics, circles are measured in degrees. There are 360 degrees in a circle. Since the earth is basically circular, it was decided to measure latitude and longitude in degrees also. Why are Latitude and Longitude measured in degrees?

How do I use Latitude and Longitude? If someone asked you the location of the local town bank, you may say "It is on the corner of Main and Third streets." Latitude and longitude are like imaginary streets on the earth. It is customary to give the latitude of a place first, and the longitude second. For example, you would say "35 degrees north, 77 degrees west". This eliminates the need to say the words latitude and longitude. How do I use Latitude and Longitude?

To find a latitude line such as 60 degrees north, you must do three things: 1. Go to your starting line (the Equator). 2. Determine which direction you must go (north or south). 3. Determine the distance in degrees you must go (60). This will give the location of one of your streets. To find a longitude line such as 40 degrees east longitude, you must do three things: 1. Go to your starting line (the Prime Meridian). 2. Determine which direction you must go (east or west). 3. Determine the distance in degrees you must go(40). This will give the location of one of your second street.

The Equator, that imaginary 24,000-mile- long circle around the earth, is clearly visible 15 miles north of Quito, Ecuador, where it takes the form of a four-inch- wide strip of stones through the center of a stone walkway, marking the division between the Northern and Southern hemispheres. cool 

Mythbusters….

Toilets and such Water Swirls… You know how the water makes a little tornado when you drain the bathtub. That APPARENTLY does not happen on the equator. Two feet away, to the north of the equator, and it swirls clockwise. Two feet south and it swirled counterclockwise. Toilets and such

http://www.youtube.com/watch?v=kHz6k Cs2QRI Toilets and such