Ch 8 Test: Question Preview (ID: 22314)

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As a block of rock moves along a fault, which of the following may occur?
a) a hot spot b) a strike-slip c) a magma subduction d) an earthquake
What causes an earthquake?
a) an increase in pressure on a body of rock b) an increase in the temperature of a body of rock c) the sudden release of stress from a body of rock d) the slow buildup of stress in a body of rock
Most faults and many major geological events occur
a) along tectonic plate boundaries b) along the shores of a continent c) in the middle of an oceanic plate d) in the middle of a continental plate
What is a fault?
a) any opening in Earth's crust b) a break in the lithosphere along which movement takes place c) a boundary between two continents d) a break in the asthenosphere along which movement takes place
A transform boundary is a place where blocks of rock
a) come together b) pull apart c) move horizontally past each other d) move vertically past each other
What is a spreading center?
a) a place where continental plates come b) a place where oceanic plates pull apart c) a place where plates move horizontally past each other d) a place where plates move vertically past each other
Which of these might happen along a convergent boundary?
a) Oceanic and continental plates come together b) Oceanic plates slide horizontally past each other c) Oceanic plates pull apart. d) Continental plates pull apart
In the middle of tectonic plates, volcanoes may form over
a) hot spots b) cooling centers c) continental-continental collision zones d) oceanic-continental collision zones
What happens along a subduction zone?
a) Two continental plates come together. b) Two oceanic plates pull apart. c) A continental plate sinks into the mantle. d) An oceanic plate sinks into the mantle.
Magma can form when
a) molten rock cools on the ocean floor b) a sinking tectonic plate begins to melt c) magnetic changes occur below Earth's surface d) rock is exposed to wind, water, and air at Eath's surface
Which of the following best describes magma?
a) molten rock that flows over Earth's surface b) solid rock at Earth's surface c) molten rock beneath Earth's surface d) solid rock beneath Earth's surface
What is one way that a folded mountain belt can form?
a) Two oceanic plates spread apart. b) Two continental plates push together. c) Old volcanoes erupt and grow. d) Blocks of crust move along faults.
Volcanoes in folded mountain belts form when
a) a continental plate moves over a hot spot b) an oceanic plate is broken by faults c) an oceanic plate partly melts as it goes into the mantle d) a continental plate crumples as it collides with another plate
Blocks of rock tilt when forces pull Earth's crust apart. Where are tilted blocks of rock commonly
a) where two oceanic plates collide b) where two continental plates collide c) along subduction zones d) along ocean spreading zones
An opening through which lava, rocks, and gases erupt is called a
a) Caldera b) Fumerole c) volcano d) geyser
A dense cloud of super-hot gases and rock fragments that races downhill from an erupting volcano is called a
a) pyroclastic flow b) steam explosion c) cinder eruption d) landslide
Most volcanoes occur
a) in the center of a continent b) along plate boundaries c) along fault zones d) over hot spots
Which of these can be dangerous to people who live very far from an erupting volcano?
a) ash clouds, because they can be carried by the wind b) lava flows, because they can burn the ground c) landslides, because they move very fast d) volcanic soils, because they are very hot
What is a volcano?
a) a chamber of magma deep beneath the surface b) a mountain that forms as the result of faulting c) an opening through which lava, rocks, and gases erupt d) a huge crater that forms as the result of collapsing rocks
Which of the following signs might indicate that a volcano might soon erupt?
a) increased wearing away of volcanic rocks b) rising temperatures in volcanic lakes c) falling temperatures in volcanic lakes d) decreased wearing away of volcanic rocks
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