Volcano Vocabulary Flashcards

A volcano that has not erupted for a long time, but may erupt again one day.

A volcano that is erupting or has shown signs that it may erupt in the near future.

<p>The opening through which molten rock and gas leave a volcano.</p> Signup and view all the answers

<p>A bowl-shaped opening at the top of a volcano.</p> Signup and view all the answers

<p>Deep long cracks where Earth's plates separate.</p> Signup and view all the answers

<p>Areas of volcanic activities resulting from plumes of hot solid material from deep inside Earth.</p> Signup and view all the answers

<p>An eruption of hot debris and gases that are shot out from the volcano.</p> Signup and view all the answers

<p>Magma flows easily and gently bubbles out, leading to thin and runny lava.</p> Signup and view all the answers

<p>A broad volcano with gently sloping sides built by nonexplosive eruptions of basaltic lava.</p> Signup and view all the answers

<p>A steep, cone-shaped hill or small mountain made of volcanic ash, cinders, and bombs.</p> Signup and view all the answers

<p>A volcano built by alternating explosive and quiet eruptions, producing layers of tephra and lava.</p> Signup and view all the answers

<p>The largest intrusive igneous rock body formed when magma cools slowly underground.</p> Signup and view all the answers

<p>The solid igneous core of a volcano left after the softer cone has been eroded.</p> Signup and view all the answers

<p>The large hole at the top of a volcano formed when the roof of a volcano's magma chamber collapses.</p> Signup and view all the answers

<p>A material found in magma formed from the elements oxygen and silicon.</p> Signup and view all the answers

<p>In places that are directly related to the movement of Earth's plates.</p> Signup and view all the answers

<p>A major belt of volcanoes that rims the Pacific Ocean.</p> Signup and view all the answers

<p>A string of islands formed by the volcanoes along a deep-ocean trench.</p> Signup and view all the answers

<p>A pool formed by groundwater that has risen to the surface after being heated by nearby magma.</p> Signup and view all the answers

<p>The volcanic rock ejected during an eruption, including ash, bombs, and blocks.</p> Signup and view all the answers

<p>The largest pyroclastic materials formed from solid rock blasted from the vent.</p> Signup and view all the answers

<p>Pebble-like bits of magma that harden before they hit the ground.</p> Signup and view all the answers

<p>Forms when gases in stiff magma expand rapidly and the walls of the gas bubbles explode into tiny, glass-like slivers.</p> Signup and view all the answers

<p>Magma that reaches Earth's surface.</p> Signup and view all the answers

<p>Cool, stiff lava that does not travel far from the erupting vent.</p> Signup and view all the answers

<p>Large blobs of magma that harden in the air.</p> Signup and view all the answers

<p>A crack in the Earth's crust.</p> Signup and view all the answers

<p>The pocket beneath a volcano where magma collects that feeds the volcano.</p> Signup and view all the answers

<p>Columns of rising magma under hot spots.</p> Signup and view all the answers

<p>A volcano that has not erupted for thousands of years and probably will not erupt again.</p> Signup and view all the answers