10.1 and 11.1 Quiz

The factors affecting Eruptions include...
A) magma composition
B) magma temperature
C) Amount of dissolved gases in the magma
D) All of the above
The __ the temperature of the magma, the __ its viscosity
A) cooler, greater
B) warmer, greater
What is pyroclastic material?
A) fragments ejected from volcano
B) semi-molten bombs
C) rough jagged blocks with sharp edges
D) cinder blocks
Andesitic lava is...
A) Viscous
B) Middle in viscosity
C) Less viscous
Cinder Cone Volcanoes have __ eruptions
A) explosive
B) quiet
C) no
D) quiet and explosive
What are the 3 types of stress?
A) compressional, tensional, shear
B) tensional, pressure, temperature
C) strain, deformation, fracture
What is an anticline?
A) fold formed by upfolding or arching rock layers
B) large, step-like fold in the otherwise horizontal sedimentary strata
C) fold formed by downfolds or troughs
D) fold formed by rocks pulling in opposite directions
Normal Faults occur when the hanging wall moves
A) horizontal and parallel
B) Down
C) Up
D) Diagonal
What is deformation?
A) all changes in the original shape and/or size of a rock body
B) change in shape or volume of a rock body
C) change in size and shape of rock body without fracturing
D) force per unit area acting on a solid
What is a caldera?
A) Magma chamber
B) Large depression in a volcano
C) Gas- rich magma
D) Hot ball of gas
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