What is the age in millions of years of Anomaly 6. Turn on digitizer (button on top that says xyz) 1. Close pop up box that says GMRT Grid 8. Click on button to start digitizing. Make sure you click "straight line" 9. On the western line for Anomaly 5 find a point that has a longitude of 5? 121\deg W and a latitude of 20\deg S. 10. Measure the distance between the western and eastern lines for Anomaly 5. Make sure you digitize your line perpendicular to the anomalies. Click the button to stop digitizing. What is the length of that line? 11. Calculate the spreading rate of the East Pacific Rise in cm/yr. Show your work. 12. Move the map to the Mid-Atlantic Ridge. 13. Find Anomaly 5. 14. On the western line for Anomaly 5 find a point that has a longitude of 14\deg W and a latitude of 20\deg S. 15. Measure the distance between the western and eastern lines for Anomaly 5. Make sure you digitize your line perpendicular to the anomalies. Click the button to stop digitizing. What is the length of that line? 16. Calculate the spreading rate of the East Pacific Rise in cm/yr. Show your work.

Anomaly Data 1. Open GeoMapApp Application 2. Choose Mercator Base Map Projection 3. Under Portals menu turn on Seafloor

Magnetic Anomaly Identifiers 4. Zoom into the East Pacific Rise and find Anomaly 5 5. What is the age in millions of years of Anomaly

6. Turn on digitizer (button on top that says xyz) 1. Close pop up box that says GMRT Grid 8. Click on button to start digitizing. Make sure you click "straight line" 9. On the western line for Anomaly 5 find a point that has a longitude of

5?

121\deg W and a latitude of 20\deg S. 10. Measure the distance between the western and eastern lines for Anomaly 5. Make sure you digitize your line perpendicular to the anomalies. Click the button to stop digitizing. What is the length of that line?

11. Calculate the spreading rate of the East Pacific Rise in cm/yr. Show your work.

12. Move the map to the Mid-Atlantic Ridge. 13. Find Anomaly 5. 14. On the western line for Anomaly 5

find a point that has a longitude of 14\deg W and a latitude of 20\deg S. 15. Measure the distance between the western and eastern lines for Anomaly 5. Make sure you digitize your line perpendicular to the anomalies. Click the button to stop digitizing. What is the

length of that line? 16. Calculate the spreading rate of the East Pacific Rise in cm/yr. Show your work.