| A | B |
|---|
| asthenosphere | the spongy layer that tectonic plates float on is |
| hot spot | places on the earth's surface directly above columns of rising magma |
| pyroclastic flow | eruption of rock fragments |
| lava | magma that flows onto the earth's surface |
| magma | molten rock |
| cinder cone volcanoes | cone shaped, made of pyroclastic material, moderately explosive |
| shield volcanoes | layers of lava, non explosive |
| Richter scale | measures earthquake strength |
| focus | point in the earth where the earthquake begins |
| epicenter | point on the surface of the earth above the earthquake |
| s-wave | second wave to arrive |
| p-wave | first wave to arrive |
| seismologist | scientists who study earthquake |
| happen along fault lines | earthquakes |
| transform boundaries | tectonic plate boundaries slide horizontally |
| convergent boundaries | boundaries that push into each other |
| divergent boundaries | boundaries that move away from each other |
| fault | surface along which the rocks break and slide past each other |
| lithosphere | the outer layer of the earth "rock sphere" |
| order of the layers of the earth | crust, mantle, outer core, inner core |
| Ms. Decedue's Thanksgiving Dinner | turkey & sweet potatoes |
| composite volcanoes | stratovolcanoes - highly explosive |
