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6 Sci Volcanoes
6th Grade Science Volcanoes Vocabulary
Question | Answer |
---|---|
VOLCANO | OPENING IN EARTH THAT ERUPTS GASES, ASH, AND LAVA. |
ACTIVE VOLCANO | VOLCANO CURRENTLY ERUPTING OR WILL ERUPT IN THE NEAR FUTURE. |
DORMANT VOLCANO | VOLCANO CURRENTLY NOT ERUPTING BUT MAY ERUPT AGAIN. |
EXTINCT VOLCANO | VOLCANO THAT HAS NOT ERUPTED IN RECENT HISTORY AND PROBABLY WILL NOT ERUPT AGAIN. |
VENT | OPENING IN THE EARTH'S SURFACE. |
CRATER | STEEP WALLED DEPRESSION AROUND THE VENT OF A VOLCANO. |
RIFT | DEEP CRACK IN THE EARTH FORMED WHEN TECTONIC PLATES MOVE APART. |
SUBDUCTION | PROCESS OF ONE TECTONIC PLATE MOVING UNDER ANOTHER. |
HOT SPOT | VOLCANICALLY ACTIVE PLACE ON EARTH'S SURFACE THAT IS FAR AWAY FROM A PLATE BOUNDARY. |
NONEXPLOSIVE ERUPTION | RELATIVELY CALM FLOW OF LAVA PASSING ONTO EARTH'S SURFACE. |
EXPLOSIVE ERUPTION | VIOLENT AND DESTRUCTIVE VOLCANIC ERUPTION. |
SHIELD VOLCANO | BROAD VOLCANO WITH GENTLY SLOPING SIDES FORMED FROM REPEATED NONEXPLOSIVE ERUPTIONS. |
TEPHRA | SOLID LAVA AND BITS OF ROCK THAT FALLS FROM THE AIR. |
CINDER CONE VOLCANO | STEEP-SIDED VOLCANO FORMED FROM EXPLOSIVE ERUPTIONS. |
COMPOSITE VOLCANO | BROAD BASED VOLCANO WITH STEEPER SIDES FORMED FROM EXPLOSIVE ERUPTIONS FOLLOWED BY QUIETER FLOWS OF LAVA. |
BATHOLITH | LARGEST INTRUSIVE IGNEOUS ROCK FORMATION. |
DIKE | IGNEOUS ROCK FORMATION FORMED WHEN MAGMA SQUEEZES INTO VERTICAL CRACKS AND CUTS ACROSS ROCK LAYERS. |
SILL | IGNEOUS ROCK FORMATION THAT FORMS WHEN MAGMA ENTERS HORIZONTAL CRACKS THAT ARE PARALLEL TO ROCK LAYERS. |
VOLCANIC NECK | LANDFORM CREATED WHEN A VOLCANO STOPS ERUPTING AND MAGMA HARDENS WITHIN THE VENT. |
CALDERA | LARGE, SEMICIRCULAR DEPRESSION THAT FORMS WHEN THE MAGMA CHAMBER BELOW PARTIALLY EMPTIES AND CAUSES THE GROUND ABOVE TO SINK. |