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0
votes
________ denotes a basaltic lava flow covered with angular, congealed lava rubble.
answered
Jun 23, 2022
in
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world
world-quiz
earth-quiz
denote
basaltic
flow
angular
lava
rubble
0
votes
What term describes fragmental volcanic material?
answered
Jun 23, 2022
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world
world-quiz
earth-quiz
term
fragmental
volcanic
material
0
votes
Which basaltic lava flow has a relatively smooth surface?
answered
Jun 23, 2022
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world
world-quiz
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basaltic
lava
flow
smooth
surface
0
votes
Large, volcanic depressions formed by subsidence and collapse are known as ________.
answered
Jun 23, 2022
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world
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large
volcanic
depressants
subsidence
collapse
0
votes
Vents that emit only hot gases and vapors are called ________.
answered
Jun 23, 2022
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vents
gases
vapors
0
votes
________ is the most abundant gaseous component dissolved in most magmas.
answered
Jun 23, 2022
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world-quiz
earth-quiz
abundant
gaseous
magma
dissolved
0
votes
Composite volcanic cones are also known as ________.
answered
Jun 23, 2022
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world
world-quiz
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composite
volcanoes
cones
0
votes
Basalt is the most common magma erupted along oceanic rift systems.
answered
Jun 23, 2022
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World
world
world-quiz
earth-quiz
basalt
magma
oceanic
rift-system
true-or-false
0
votes
Aa flows are generally thinner and have smoother surfaces than pahoehoe flows.
answered
Jun 23, 2022
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world
world-quiz
earth-quiz
flow
thinner
smoother
surface
pahoehoe
true-or-false
+1
vote
Vents that emit only heated, volcanic gases and water are called fumaroles.
answered
Jun 23, 2022
in
World
world
world-quiz
earth-quiz
vents
volcanic
gases
water
fumaroles
true-or-false
0
votes
Crater Lake in Oregon actually occupies a caldera, not a crater.
answered
Jun 23, 2022
in
World
world
world-quiz
earth-quiz
crater
lake
oregon
caldera
true-or-false
0
votes
In general, cinder cones are much larger than shield volcanoes.
answered
Jun 23, 2022
in
World
world
world-quiz
earth-quiz
cinder
cones
shield
volcanoes
large
true-or-false
0
votes
Repeated eruptions of relatively fluid lava from fissures can eventually cause an area to be covered by flood basalts.
answered
Jun 23, 2022
in
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world
world-quiz
earth-quiz
eruption
lava
fluid
flood
basaltic
0
votes
Small amounts of water can lower partial melting temperatures in silicate rocks.
answered
Jun 23, 2022
in
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world
world-quiz
earth-quiz
melting
temperature
silica
rock
water
0
votes
Basaltic lavas are generally hotter and more viscous than andesite lavas.
answered
Jun 23, 2022
in
World
world
world-quiz
earth-quiz
basaltic
lava
viscous
andesitic
true-or-false
0
votes
Most basaltic magmas are believed to form by partial melting of granite in the lower crust and upper mantle.
answered
Jun 23, 2022
in
World
world
world-quiz
earth-quiz
basaltic
magma
melting
granite
crust
mantle
+1
vote
The active Hawaiian volcanoes are situated directly above a major boundary between two of the Earth's largest tectonic
answered
Jun 23, 2022
in
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world
world-quiz
earth-quiz
hawaii
boundary
tectonic
plates
0
votes
Magma generation at depth almost always involves partial melting, not complete melting of the source rock.
answered
Jun 23, 2022
in
World
world
world-quiz
earth-quiz
true-or-false
magma
depth
melting
rock
+1
vote
Powerful, explosive, volcanic eruptions can result in climatic cooling for millions of years following the eruption.
answered
Jun 23, 2022
in
World
world
world-quiz
earth-quiz
true-or-false
climatic
eruption
explosion
volcanic
+1
vote
The eruptions of the Hawaiian volcanoes may be described as explosive in comparison to the 1980 Mount St. Helens
answered
Jun 23, 2022
in
World
world
world-quiz
earth-quiz
true-or-false
hawaii
explosion
st-helens
eruption
volcanoes
+1
vote
The viscosities of magmas increase with increasing percentages of silica.
answered
Jun 23, 2022
in
World
world
world-quiz
earth-quiz
viscosity
magma
silica
percentage
true-or-false
+1
vote
Ash and lapilli are different sized pyroclastic particles.
answered
Jun 23, 2022
in
World
world
world-quiz
earth-quiz
true-or-false
ash
lapilli
pyroclastic
particle
0
votes
Dissolved gases may comprise up to a few percent by weight of a magma.
answered
Jun 23, 2022
in
World
world
world-quiz
earth-quiz
true-or-false
magma
gases
0
votes
Xenoliths are associated most closely with which magmatic process and igneous rockbody?
answered
Jun 23, 2022
in
World
world
world-quiz
earth-quiz
xenoliths
magma
igneous
rock
vesiculation
lava
0
votes
Which of the following best describes the bedrock in the Sierra Nevada Mountains in California?
answered
Jun 23, 2022
in
World
world
world-quiz
earth-quiz
basaltic
andesitic
granite
batholiths
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