Which of the following is NOT true of a batholith?

It is the largest intrusive igneous body

Lava plateaus form when

fluid basaltic lava flows out of fissures

What is a volcanic bomb

a particle larger than 64 mm in size ejected as glowing lava

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Ch 10 Earth Science Study Guide

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Answers

1
Which of the following is NOT true of a batholith?
It may form the core of a mountain range.
It is the largest intrusive igneous body
It may be uplifted and then exposed by erosion
It is often a small part of a sill.
2
Lava plateaus form when
lahars create new landforms
fluid basaltic lava flows out of fissures
the top of a volcano collapses.
pyroclastic flows erupt from volcanoes
3
What are the landforms at divergent ocean plate boundaries?
island arcs
mid-ocean ridges
continental arcs
ocean trenches
4
Which type of landform develops at plate boundaries where one oceanic plate descends beneath another?
mountain formed by a batholith
rift valley
lava plateau
volcanic island arc
5
The particles produced in volcanic eruptions are called
pyroclastic materials
volcanic stocks
laccoliths
calderas
6
As the temperature of lava increases,
its viscosity decreases
it begins to harden
it can flow a much shorter distance.
its viscosity increases
7
What is a volcanic bomb
a pocket of gas that is released suddenly
a very violent volcanic explosion
a tiny particle of ejected rock less than 64 mm in size
a particle larger than 64 mm in size ejected as glowing lava
8
Most intraplate volcanic activity occurs where
mantle plumes rise toward the surface within a plate.
oceanic plates diverge
hot magma descends into the mantle under a plate.
oceanic and continental plates converge.
9
Which of the following is similar to a batholith but has less than 100 square kilometers exposed?
laccolith
stock
dike
sill
10
Which of the following is NOT a factor in how violently or quietly a volcano erupts?
magma’s temperature
magma’s concentration of dissolved gases
magma’s depth inside a volcano’s vent
magma’s composition
11
At divergent plate boundaries in the ocean, magma rises and melts because of
higher temperatures at the surface
intrusive plutons at the boundary
a decrease in pressure.
increased silica content of magma.
12
Magma forms when solid rock in the crust and upper mantle
parially melts
vaporizes
cools
crystallizes
13
Most shield volcanoes have grown from the ocean floor to form
tectonic plates
islands.
canyons
dikes
14
When a common type of basaltic lava hardens, it forms aa, which has
a surface made of cinders
a smooth surface that is wrinkled.
holes that ooze hot water
a rough, jagged surface.
15
Which type of intrusive feature forms when magma is injected into fractures cutting across rock layers?
dike
laccolith
sill
lava plateau
16
What type of volcano is fairly symmetrical and has both layers of lava and pyroclastic deposits?
a composite cone volcano
pyroclastic volcano
cinder cone volcano
shield volcano
17
Which of the following plays a major part in determining the form of a volcano?
magma composition
nearness of other volcanoes
elevation above sea level
local soil type
18
The broad, slightly dome-shaped volcanoes of Hawaii are
composite cone volcanoes
cinder cone volcanoes
shield volcanoes
pyroclastic volcanoes
19
Structures that form from the cooling and hardening of magma beneath Earth’s surface area. vents.
calderas
vents
plutons
lahars
20
What is a caldera?
large depression in a volcano
type of volcano
fiery volcanic explosion
very large volcanic bomb

Ch 10 Earth Science Study Guide Flashcards | StudBud