Ring of Fire

1. Ring of Fire Hannah Davidson, Heather Hammond, Katie Kittle

2. Earth’s outer shell, the lithosphere, is divided into eight large shifting plates and a number of smaller ones • The plates are spreading apart, sliding past each other, or colliding with each other in slow motion on top of the Earth's hot, pliable interior • 3 types of tectonic plate boundaries: • Divergent: adjacent plates pull apart • Convergent: plates move toward each other, also known as subduction • Transform: plate slides horizontally past another Plate Tectonics

3. The buildup of stress by moving plates leads to a sudden break in rocks, a fault, and finally causes a shaking/trembling of the ground or earthquake. • The movement generates at the focus point and sends out seismic waves in all directions. • Volcanism has 4 principal settings: • 1. Along divergent plate boundaries • 2. Areas of continental extension • 3. Along converging plate boundaries where subduction is occurring • 4. In "hot spots" that are usually located in the interior of plates Earthquakes & Volcanoes

4. 40, 000 km long • Also known as the Circum Pacific Belt • 90% of the world’s earthquakes and 81% of world’s largest earthquakes • 75% of the world’s active and dormant volcanoes Pacific Ring of Fire