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Geology Test 1 Practice Test
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48
Geology
Undergraduate 1
02/06/2013

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Term
The first mineral to form mafic magma at high temps are?
Definition
olivine and calcium plagioclase
Term
What type of valcano contains large number of vessels?
Definition
Pumice
Term
Which of the following has the lowest silica?
Definition
Basalt
Term
Granite and Rhylite have the same _____ but different ____?
Definition
composition and texture
Term
What will be the net charge of an atom containing 13 protons, 14 neutrons, and 12 electrons?
Definition
+1
Term
Which pair would most likely be found together in an igneous rock?
Definition
Olivine and Ca rich plagioclase
Term
A ______ valcano is ver large, gently slopped, mound composed mainly of basaltic lava flows?
Definition
sheild
Term
Which denotes negativiely charged particels in an atom?
Definition
electron
Term
Which mineral usually forms at the latest stage of the magma crystallization?
Definition
Quartz
Term
Which basaltic lava flow has a fairly smooth and rope surface?
Definition
pahohoe
Term
which rock sequence is the proper order of increasing Fe-Mg for intrusive ingneous rock series?
Definition
granite, diorite, gabbro
Term
Isotope C14 has 6 protons and an atomic weight of 14 what is its neutron and elcetron count?
Definition
8 and 6
Term
subduction zones are?
Definition
convergant plate boundries
Term
What is the hardest mineral known?
Definition
Diamond
Term
Columbia river basalt in washington is a?
Definition
flood basalt
Term
exceptional heat and pressure produce which type of rock?
Definition
metamorphic
Term
Huge mudflow made up of wet volcanic debris and water is called?
Definition
lahar
Term
Which of the following properties decreases in the divergant of arrows? Felsic-intermediate-mafic?
Definition
Silica content
Term
mafic igneous rock are high in what?
Definition
olivine and pyroxene
Term
parallel fractures produced by contraction of cooling lava flow is?
Definition
columnar joints
Term
plate subduction and mountain building occurs along?
Definition
convergant boundries
Term
magma rising and sea floor spreading takes place along?
Definition
divergant boundries
Term
Which igneous rock has coarse grain texture?
Definition
granite
Term
which of the following textures mineral grains of different size?
Definition
porphyrtic
Term
which mineral dissolves in hydrocloric acid?
Definition
calcite
Term
Which mineral has a composistion of SiO2
Definition
quartz
Term
What describes the big hawaiian volcanoes?
Definition
they are situated in the interior of pacific plate above a hot spot
Term
lithification produces which type of rock?
Definition
sedimentary
Term
mineral quartz has what type of silicate structure?
Definition
3D framework
Term
Whats a pyroclastic igneous rock?
Definition
tuff
Term
which mineral pair have the same chemical composition but different structure?
Definition
Diamond and Graphite
Term
Whats true about a shield volcano?
Definition
large, broad, slightly domed
Term
Changing the composition of magma by incorporating surrounding hot rock is?
Definition
assimilation
Term
Rocks with phaneritic texture have crystals that can be seen with your eye.
Definition
True
Term
Felsic rocks are light colored ingeous rich SiO2
Definition
Ture
Term
Iceland is situation atop of a convergant boundry
Definition
false
Term
igneous rock with pyroclastic texture are produced by violent erruptions
Definition
True
Term
minerals with the lowest melting points are first to crystalize
Definition
false
Term
extrusive igneous rocks form well below earths surface
Definition
false
Term
electrons are the lightest and least massive of the basic atomic particals
Definition
true
Term
The two most abundant elements in the earths core are Fe and Ni
Definition
true
Term
Mineral mica is one of the most common 2D sheet silicates
Definition
true
Term
Minerals can be solid liquid or gas
Definition
false
Term
obsidian is a glassy volcanic rock
Definition
true
Term
ferro magnesium minerals produced from mafic magma tedn to have dark color
Definition
true
Term
calcite and dolomite are carbonic minerals
Definition
true
Term
mafic magma is the less viscous than felsic magma
Definition
true
Term
the two most abundant elements in the earths crust are O and Si
Definition
true
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