| A | B |
|---|
| crust | thin,solid,outer layer of the Earth |
| erupt | forcefully move material onto the surface of the earth from a vocanoe |
| lava | melted rock flowing on the surface of the earth,usually from a volcanoeor geyser |
| magma | melted rock under the earth's surface |
| hot spot volcanoe | where magma from the mantle rises through the weak areas in the earth's crust and forms a volcanoe |
| landslide | mass of soil and rock sliding down a steep slope |
| Ring of Fire | many active volcanoes surrounding the Pacific Ocean |
| seismic activity | movements in earth's crust caused by earthquakes |
| pillow lava | lava cooled rapidly under water,becoming round solid formations |
| volcanic shield mountain | ,low,broad,dome-shaped volcanoe usually covering a large area |
| warm water vent | opening or hole on the ocean letting water to be heated by the magma below |
