Term
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Definition
| OPENING WHERE MAGMA IS FORCED UP AND FLOWS OUT ONTO EARTHS SURFACE AS LAVA, FORMING A VOLCANO |
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Term
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Definition
| STEEP WALLED DEPRESSION AROUND A VOLCANOS VENT |
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Term
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Definition
| THE RESULT OF AN UNUSUALLY HOT AREA AT THE BOUNDARY BETWEEN EARTHS MANTLE AND CORE THAT FORMS VOLCANOES WHEN MELTED ROCK IS FORCED UPWARD AND BREAKS THROUGH THE CRUST |
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Term
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Definition
| BROAD, GENTLY SLOPING VOLCANOES FORMED BY QUIET ERUPTIONS IN THE EARTH |
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Term
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Definition
| BITS OF ROCK OR SOLIDIFIED LAVA DROPPED FROM THE AIR DURING AN EXPLOSIVE VOLCANIC ERUPTION |
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Term
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Definition
| STEEP SIDED, LOOSELY PACKED VOLCANOE FORMED WHEN TEPHRA FALLS TO THE GROUND |
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Term
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Definition
| VOLCANOE BUILT BY ALTERNATING EXPLOSIVE AND QUIET ERUPTIONS THAT PRODUCES LAYERS OF TEPHRA AND LAVA |
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Term
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Definition
| LARGEST INGENEOUS ROCK BODY THAT FORMS WHEN MAGMA BEING FORCED UPWARD TOWARDS EARTHS CRUST COOLS SLOWLY AND BECOMES SOLID UNDERGROUND |
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Term
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Definition
| IGNEOUS ROCK FORMED WHEN MAGMA SQUEEZES INTO A VERTICAL CRACK THAT CUTS ACROSS ROCK LAYERS AND HARDENS UNDERGROUND |
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Term
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Definition
| IGNEOUS ROCK FEATURE FORMED WHEN MAGMA IS SQUEEZED INTO A HORIZONTAL CRACK |
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Term
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Definition
| SOLID IGNEOUS CORE OF A VOLCANOE LEFT BEHIND AFTER THE SOFTER CONE HAS BEEN ERODED |
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