Andy Warhol's Vesuvius TEST YOURSELF ON THE DYNAMICS OF ERUPTIONS

No. of Questions= 10 Pass mark is - 70 %. You can press the Mark it button at the bottom of the page to have the quiz marked.

1.	Explosive eruptions are typically associated with magmas having ________ viscosities and ________ volatile contents.
	a)	high / low
	b)	low / high
	c)	low / low
	d)	high / high
	e)	the viscosity and volatile content have no relationship to explosivity
2.	_________ is defined as the ability of a substance to resist flow.
	a)	defluidity
	b)	exsolution
	c)	viscosity
	d)	flowability
	e)	ductility
3.	The crystallization of a mafic magma will generate the following rock type:
	a)	basalt
	b)	rhyolite
	c)	andesite
	d)	dacite
	e)	granite
4.	A magma's viscosity will increase with increasing ___________.
	a)	polymerization
	b)	silica content
	c)	temperature
	d)	all the above
	e)	(a) and (b) only
5.	The magnitude of historical eruptions can be measured by the _____________.
	a)	Modified Mercalli Volcano Index
	b)	Richter scale
	c)	Bowen's reaction series
	d)	Eruptiivity Index of Concerned Scientists
	e)	Volcano Explosivity Index
6.	The large, northeast-trending feature in the figure below is called a __________ . It is coincident with a __________ plate boundary.
	a)	volcanic plateau / divergent
	b)	mid-oceanic ridge / divergent
	c)	mid-oceanic ridge / convergent
	d)	volcanic plateau / transform
	e)	oceanic trench / convergent
7.	Which of the following island chains were generated by intraplate volcanism above a mantle plume.
	a)	the Aleutian Island chain
	b)	Emporer Island chain
	c)	Hawaiian Island chain
	d)	both (b) and (c)
	e)	all the above
8.	Active mid-oceanic ridges are often associated with hydrothermal vents. These submarine hot springs (see figure below) are called _________.
	a)	black smokers
	b)	seamounts
	c)	hotspots
	d)	spatter cones
	e)	hydroponic thermoclines
9.	The cold, rigid lithosphere is underlain by the hot, mobile ________________.
	a)	oceanic crust
	b)	outer core
	c)	mesosphere
	d)	plastosphere
	e)	asthenosphere
10.	Vesiculation can be promoted by __________.
	a)	decompression
	b)	crystallization
	c)	increasing the viscosity
	d)	all the above
	e)	(a) and (b) only

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