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(noun): a cloud of super-heated ash and other gases emitted during some volcanic eruptions
Ash cloud
(noun): the opening at the top of a volcano, from which magma can escape
Central vent
(noun): (of a volcano) a triangle-shaped hill formed as material from volcanic eruptions piles up around the volcanic vent; essentially, the body of a volcano
Cone
(noun): the round hole at the top of a volcano
Crater
(noun): the thick outer surface of the Earth or another planet
Crust
Earthquake
(noun): a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the Earth's crust or volcanic action
the steps you take to make sure you are safe before, during, and after an emergency or natural disaster
Emergency preparedness
(verb): (of a volcano) to explode inside; flames, rocks, and lava come out of the top
Erupt
(noun): - a crack on or below the Earth’s surface, rift
Fault
(noun): of a volcano, an opening on the side of the cone from which magma can escape; not the central vent
Lateral vent
(noun): molten rock that breaks through the Earth’s surface
Lava
(noun): hot liquid rock inside the Earth
Magma
(noun): a way of measuring the strength of an earthquake
Richter scale
a horseshoe-shaped path along the Pacific Ocean where tectonic plates meet, characterized by active volcanoes and frequent earthquakes
Ring of fire
(noun): an instrument that is used for measuring the strength of earthquakes
Seismograph
(noun): one of the very large areas into which the Earth’s surface broken up and which move against each other
Tectonic plate
