1. Geology Study of the Earth, its systems and processes

2. Together, latitude and longitude can be used as a geographic coordinate system to specify any location on the globe.longitude geographic coordinate system

3. Latitude -AKA Parallels (90  N to 90  S) - drawn East & West, but are counted North & South. - “climb the latitude ladder” - Equator = 0 , Poles = 90  - SAHS is located at 40°17'53"N -

4. Longitude -AKA Meridians(0  to 180  ) - drawn North & South, but are counted East & West. - Prime Meridian = Greenwich, Eng = 0  - 180  = Int’l Date Line - the Earth rotates 15  of longitude every hour, therefore, it takes 24 hours for the Earth to rotate 360 . - SAHS is located at 75°21'20  W

5. The Earth can then be segmented into hemispheres: Northern hemisphere Southern hemisphere Western hemisphere Eastern hemisphere

6. There are 60 minutes in a degree There are 60 seconds in a minute Minutes and seconds are used for finer measurements

9. SAHS is located at the coordinates: 40°17'53"N, 75°21'20  W

10. GPS – Global Positioning System Using triangulation, a GPS receiver is able to calculate PTEDS" on earth position time elevation direction speed A space based global positioning system that provides reliable location and time information in all weather anywhere on Earth when 3 or more GPS satellites are within sight. It is operated by the US government and available free to anyone with a GPS receiver.

12. Create a GEOCACHE