Geological terms: Quiz 1

Question	Answer
Bradyseism	A sudden rise or fall of ground level due to changes in a magma chamber below ground
Lahar	A mudslide of loose volcanic material
Lapillus	Small pebble of pumice ejected by a volcano
Nuée ardente	flow of super-heated gas and ash following a pyroclastic flow
Peléan	volcanic eruption involving a forceful ejection of gas, ash, and other material several miles into the air
Pyroclastic Flow	mass of super-heated ash, gas, and rock ejected by a volcano that tends to flow and harden into solid rock
Seismic	earthquake or ground tremor related
Stratigraphy	disposition of layers of material deposited on the Earth's surface and the study of their contents, chronology, and meaning
Subsidence	downward movement, especially of the earth's surface
Tephra	Any loose, inorganic debris ejected by a volcano
Tsunami	Tidal wave caused by earthquake or other disturbance
Tuff	soft, porous rock made of consolidated volcanic ash
Volcanic bomb	large, heavy stone ejected by a volcano that falls to the earth from the sky
Volcaniclastic	volcanic rock consisting of fragments of older rocks

Resource summary

	Created by Roxanne V Springman almost 7 years ago