| A | B |
|---|
| Magma | A natural hot melt composed of a solution of rock-forming materials, steam, and super-heated gases from which igneous rock results. |
| Lava | The magma from the Earth's mantle can rise and collect in spaces called magma chambers. The magma continues to collect here until it is pushed out of a crack in the ground or a volcano. |
| Volcano | When magma beneath Earth's surface is forced up due to pressure, it flows out to Earth's surface through openings. |
| Geologist | A person who studies rocks, soil, and other physical features of the Earth. |
| Viscosity | A property of fluids that causes them to resist flowing as a result of internal friction from the fluid’s molecules moving against each other. |
| Volcanology | The scientific study of volcanoes and volcanic phenomena. |
| Eruption | Magma and gases that have been blocked in chambers under the Earth's surface, erupt through the tops of volcanoes. |
| Cinder cone volcano | A cone-shaped mass of volcanic cinders accumulated at the vent of a volcano. |
| Shield volcano | A low, broad, dome-shaped volcano built up of overlapping built up of basaltic lava flows and often covering a very large area. |
| Composite volcano | A volcano whose cone is made up of alternate layers of ash and lava. |
| Ash | Fine material thrown out of a volcano during an eruption. |
| Pyroclastic | Rocks composed chiefly of fragments of volcanic material. |
| Cinders | Cooled volcanic rock material |
| Vent | The opening of a volcano in the earth’s crust. |
