Name _____________________________pd. ____ Seat #_____ Color _____________ Volcano Tracking Background: There are more than 1,500 active volcanoes in the world. An active volcano is one that has erupted at least once in the past 10,000 years and is likely to erupt again. Because most of the Earth’s volcanoes are hidden under the oceans, people have not been able to witness their eruptions. Every year, about 50-60 volcanoes erupt on land where people might be able to see them. Scientists estimate that there are about 200 volcanic eruptions under the oceans. The activity below will ask you to plot 24 volcanoes and recognize a few patterns to where and how they form. Procedure: 1. With a PENCIL, using latitude and longitude lines, mark each of the volcanoes listed in the Volcano table onto your blank map by NUMBER. 2. Draw a small volcano with lava coming out in the bottom right corner of this page. 3. Color code (and make a key for) the 3 different types of volcanoes: composite/stratovolcano, cinder, and shield. 4. Compare your map to the picture of the plates in your book pgs. 712-713 (or on the back of your reading quiz). With a pencil, lightly draw in the plate boundaries & label the plates on your map accordingly. 5. Also looking at pgs. 712-713, what direction(s) are the plates moving relative to one another? Draw in with arrows on your map & label with a “D” for divergent, “T” for transform, or “C” for convergent. 6. Put a star next to any volcanoes that do not fall along the plate boundaries. 7. Fill out the table below by placing an “X” in the box if the plate is oceanic OR continental. Plate Name Pacific Nazca South American North American Philippine Eurasian Cocos Oceanic Continental Volcano Table: Label these volcanoes on your map by NUMBER. USE PENCIL! Then color code them based on their type. Name 1. Azul 2. Bezymianny 3. Cerro Negro 4. Cotopaxi 5. Erebus 6. Katmai 7. Kilauea 8. Krakatau 9. Ksudach 10. La Palma 11. Lassen Peak 12. Mt. Etna 13. Mt. Fuji 14. Mt. Pelee 15. Mt. Rainier 16. Mt. St. Helens 17. Nevada del Ruiz 18. Paricutin 19. Pinatubo 20. Stromboli 21. Sunset Crater 22. Surtsey 23. Tambora 24. Vesuvius Type Composite Composite Cinder cone Composite Composite Composite Shield Composite Shield Composite Composide Shield Composite Composite Composite Composite Composite Latitude 36 S 56 N 12 N 0.7 S 77 S 58 N 19 N 6S 52 N 29 N 40 N 38 N 35 N 15 N 47 N 46 N 5N Longitude 71 W 161 E 87 W 78 W 167 E 155 W 155W 105 E 157 E 18 W 121 W 15 E 139 E 61 W 122 W 122 W 75 W Cinder cone Composite Composite Cinder cone Shield Composite Composite 20 N 15 N 39 N 35 N 63 N 8S 41 N 102 W 120 E 15 E 111 W 20 W 118 E Observations: 1. What pattern do you see as far as the location of most of the volcanoes? ______________________________________________________________________ __________________________________________________________ This area is called the Pacific Ring of fire. It makes a horseshoe pattern around the pacific plate/ocean. 2. What percentage of the volcanoes are located in the Ring of Fire. Calculate by using the following formula: # in shaded area X 100 = % of volcanoes in the Ring of Fire Total # 3. What percentage of the volcanoes are located outside of the Ring of Fire? To find out use the following formula: # NOT in shaded area X 100 = % of volcanoes outside the Ring of Fire Total # 4. What major volcanic zone are those NOT along plate boundaries, such as the Ring of Fire, considered? (see notes for 3 zones if not sure) ____________________ Briefly describe how these form. ______________________________________________________________________ ______________________________________________________________________ 5. Types of volcanoes in the Ring of Fire: # of stratovolcanoes: ______________ # of shield volcanoes: ______________ # of cinder cones: ______________ 6. What type of volcano is most common in the Ring of Fire? _____________________ Describe this type of volcano (use notes) ______________________________________________________________________ ______________________________________________________________________ 7. What plate movement most often occurs around the Ring of Fire? Circle one. Divergent Convergent Transform 8. Why do you think so many volcanoes occur along the Ring of Fire? ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________