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Earth Science Chapter 9/10 Flashcards | StudBud
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Earth Science Chapter 9/10
Earth Science Chapter 9/10
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1
Where do hot spot volcanoes form?
boundary of a tectonic plate
middle of a tectonic plate
in only one place on earth
edge of a tectonic plate
2
Whats a pahoehoe?
smooth wrinkled ropey lava
smooth slick lava
sharp wrinkled lava
bumpy wrinkled lava
3
What are the 3 types of volcanos
Cinder Cone, Composite Volcano, and Shield Volcano
Fuji, Mt. Helens and molten
Cinder Cone, lava, magma
Cinder, Shield, and Active
4
Wegener’s hypothesis was rejected because...
He could not explain HOW the continents moved.
He could not explain WHEN the continents moved.
He could not explain WHERE the continents moved.
He could explain HOW the continents moved.
5
What is a volcanic neck?
It is formed when magma hardens in cracks, parallel to rocks
It is formed when magma hardens in cracks across rock layers
The largest type of intrusive igneous rock mass
It is formed when magma hardens in a volcano’s pipe
6
What was the name of the Supercontinent?
Beringia
Panqea
The United States of America
Pangea
7
What is the weaker, hotter zone beneath the lithosphere ?
outer core
asthenosphere
crust
pizza hut
8
What is Aa lava?
Least viscous, forms wrinkly rock.
More viscous, forms sharp volcanic rock
Most viscous, forms chunky rock.
Lava that cools rapidly
9
Which letter identifies a laccolith?
B
A
D
C
10
What is a sill?
It is formed when magma hardens in a crack, parallel to rock
The largest type of intrusive igneous rock mass
It is formed when magma hardens in a crack, across to rock
It is formed when magma hardens in a volcano’s pipe
11
How is a caldera formed?
When volcanoes become dormant
They form above converging plate boundaries
Magma chamber & main vent must be empty after an eruption
Shield, cinder cone, strata cone/composite
12
Viscosity is...
how the lava looks
how much the lava weighs
lava's temperature
how the lava flows
13
Plutons are what type of rock?
Sedimentary
Dwayne Johnson
Igneous
Metamorphic
14
What is a lahar?
A way of redirecting lava flow.
A dome that appears on a volcano before it erupts.
A mudflow composed of pyroclastic material, and water.
A type of volcano.
15
The lithosphere includes
Crust
Core
Crust and upper mantle
Mantle
16
Periods of reverse and normal magnetism on either side of a mid-ocean ridge
reverse magnetism
archaeomagnetism
paleomagnetism
subduction
17
According to the theory of plate tectonics, what drives plate motion?
convection currents
mid-ocean ridges
volcanic eruptions
magnetic reversals
18
Transform boundaries...
can cause an earthquake when they slide past each other.
Never move.
move away from each other.
cause mountains due to the plates colliding/moving towards each other.
19
Aa lava resembles...
Braids and ropes
Rough, jagged blocks
20
The largest types of plutons are __________.
batholiths
stocks
laccoliths
sills
21
What is a collapse at the neck of a volcano called?
Cinder cone
Lava Plateau
Caldera
Crater
22
a large, flat area covered by lava
crater
lava plateau
caldera
23
What does a shield volcano look like?
A shield volcano is invisible
Tall and steep sides
A classic cone shape
Flat and gently sloping sides
24
Alfred Wegener developed the
theory of continental drift
theory of continental plates
theory of moving earth
theory of plate tectonics
25
What is the Ring of Fire?
area around the equator with many earthquakes and volcanoes
area around the Atlantic Ocean with many earthquakes and volcanoes
area in California with many earthquakes and volcanoes
area around the Pacific Ocean with many earthquakes and volcanoes
26
What are Volcanic Dikes?
Magma forced into cracks that cut vertically across the rock
VolcanicDikes
Mama forced into cracks that cut vertically across the rock
Magma forced into cracks that cut horizontally in the rock
27
Select all types of evidence used to support the Continental Drift.
Radiation
Fossils
Matching landforms and rock layers
Glacial striations found on different continents
28
What is true about all plutons?
They cut across other rock layers
They form near Earth's surfaces
They form above the Earth's surface
They form below the Earth's surface
29
How is a Cinder Cone volcano formed?
From layers of cinders and ash typically from one eruption.
Layers of Lava which build up over the span of thousands of years
Pops up out of the ground
30
what formed the Himalayas?
continent-continent divergent
continent-continent convergent
continent-continent transform
continent-continent suburb
31
Pyroclastic material forms when
Magma remains underground to long
Lava flows calmly
Lava flows underwater
Magma explodes into the air
32
How is a Composite volcano formed?
From Cinders and ash that typically come from one eruption.
When lava cant flow because it is so viscous and builds up around the vent
Alternating layers of lava and ash are erupted and form over many years.
Low viscosity lava flows that build up over time
33
What is a convergent plate boundary?
It destroyes volcanoes
It makes oceans
Two plates collide into each other
It means the plates stay still
34
Which of the following factors affects the formation of magma?
All of the above
Temperature
Water Content
Pressure
35
Sill definition
When magma flows rhrou the mantle
When magma flows between layers of rock
Intrusive rock formation
A type of soil
36
Most of Earth's earthquakes, volcanoes, and mountain building occur
in the center of the continents.
at plate boundaries.
at volcanic island arcs.
in the Himalayas.
37
Divergent Boundary
A plate boundary where two plates move away from each other
prefix that means away
prefix that means away
A plate boundary where two plates move away from each other
