Question 1

A volcanic hill that is on the seafloor and has a flat top is best called a

Accepted Answer

A)  guyot. 
B)  seamount. 
C)  aseismic ridge. 
D)  microcontinent. 
A)  guyot. 
B)  seamount. 
C)  aseismic ridge. 
D)  microcontinent. A

Question 2

At a convergent plate boundary,oceanic crust is ____________________.

Accepted Answer

destroyed

Question 3

Why were glacially deposited strata important in the development of continental drift theory?

Accepted Answer

The glacial deposits indicated that all southern continents must have been contiguous and closer to the South Pole.Glaciers cannot form in the middle of an ocean,which is where they would have originated if the continents were not together.

Question 4

What is a method by which the present rate of motion between two plates can be measured accurately?

Accepted Answer

The travel of a laser beam can be timed

Question 5

Describe the features of oceanic trenches.For what geological reasons do the trenches appear like this?

Accepted Answer

Oceanic trenches are long,steep sided de

Question 6

Olympus Mars,the largest volcano in the solar system,is

Accepted Answer

A)  on Venus. 
B)  a shield volcano. 
C)  covered with an ice cap. 
D)  indicative of active plate tectonics. 
A)  on Venus. 
B)  a shield volcano. 
C)  covered with an ice cap. 
D)  indicative of active plate tectonics.

Question 7

What was the principal reason why Wegener's theory of continental drift was rejected?

Accepted Answer

Wegener lacked a plausible mec

Question 8

Active volcanism on Venus indicates that the planet has a geologically active interior.

Accepted Answer

A) True 
 B)False

Question 9

That the oceanic crust is geologically young and the parallel magnetic striping pattern of basalts is symmetrical about oceanic ridges was conclusively shown by what?

Accepted Answer

A)  radiometric dating of oceanic basalts and sequences from continents 
B)  the unusually thin layer of oceanic sediments and ages of contained fossils 
C)  the existence of the same magnetic anomaly patterns in all ocean basins 
D)  radiometric dating of oceanic basalts and sequences from continents AND the unusually thin layer of oceanic sediments and ages of contained fossils 
E)  all of these 
A)  radiometric dating of oceanic basalts and sequences from continents 
B)  the unusually thin layer of oceanic sediments and ages of contained fossils 
C)  the existence of the same magnetic anomaly patterns in all ocean basins 
D)  radiometric dating of oceanic basalts and sequences from continents AND the unusually thin layer of oceanic sediments and ages of contained fossils 
E)  all of these

Question 10

Geologists locate plate boundaries ____.

Accepted Answer

A)  at continental margins 
B)  at volcanoes 
C)  by earthquake epicenters 
D)  at volcanoes AND by earthquake epicenters 
E)  All of these 
A)  at continental margins 
B)  at volcanoes 
C)  by earthquake epicenters 
D)  at volcanoes AND by earthquake epicenters 
E)  All of these

Question 11

The 2004 Indian Ocean tsunami,the 2010 Indonesian volcanic eruptions and the 2011 Japan earthquake and tsunami are all due to plate tectonics.

Accepted Answer

A) True 
 B)False

Question 12

Mountain building events occur along ____________________-____________________ or ____________________-____________________ plate boundaries.

Accepted Answer

oceanic-continental,

Question 13

What do studies of paleomagnetism show?

Accepted Answer

A)  the northern and southern hemispheres have reversed position many times 
B)  the ocean basins are young 
C)  each continent once had its own magnetic pole 
D)  the continents remain fixed and the north magnetic pole has moved 
E)  all of these 
A)  the northern and southern hemispheres have reversed position many times 
B)  the ocean basins are young 
C)  each continent once had its own magnetic pole 
D)  the continents remain fixed and the north magnetic pole has moved 
E)  all of these

Question 14

Oceanic ridges are geologically stable features where sediments are deposited and nothing much else takes place.

Accepted Answer

A) True 
 B)False

Question 15

Jupiter's moon,Io,has no impact craters.This means that the moon

Accepted Answer

A)  has been protected from meteors by Jupiter 
B)  is geologically active. 
C)  has too little gravity to attract meteors. 
D)  has a liquid sulfur surface. 
A)  has been protected from meteors by Jupiter 
B)  is geologically active. 
C)  has too little gravity to attract meteors. 
D)  has a liquid sulfur surface.

Question 16

The type of plate boundary that runs through California is called ____________________,and the name of this plate boundary is ____________________.

Accepted Answer

transform,

Question 17

Which of the following was not evidence for Wegener's continental drift hypothesis?

Accepted Answer

A)  glacial deposits of Gondwana continents 
B)  fit of African and South American shorelines 
C)  paleomagnetic striping of the oceanic crust 
D)  fossil plant and animal distributions 
E)  similar rock sequences and mountain ranges 
A)  glacial deposits of Gondwana continents 
B)  fit of African and South American shorelines 
C)  paleomagnetic striping of the oceanic crust 
D)  fossil plant and animal distributions 
E)  similar rock sequences and mountain ranges

Question 18

One of the most general conclusions to be drawn from plate tectonic theory is that ____.

Accepted Answer

A)  the Earth is gradually losing heat 
B)  the Earth's geography has continually changed 
C)  the Earth is slowly expanding 
D)  the Earth is slowly shrinking 
E)  all the ocean basins are gradually enlarging 
A)  the Earth is gradually losing heat 
B)  the Earth's geography has continually changed 
C)  the Earth is slowly expanding 
D)  the Earth is slowly shrinking 
E)  all the ocean basins are gradually enlarging

Question 19

Fossil evidence linking the Gondwana continents includes which animal fossils?

Accepted Answer

A)  lake-dwelling Mesosaurus and large land-dwelling reptile Lystrosaurus and Cynognathus 
B)  freshwater Mesosaurus and dinosaurs Brontosaurus and Tyrannosaurus 
C)  freshwater crocodiles and the large amphibian Eryops 
D)  reptile Dimetrodon and the first bird Archaeopteryx 
E)  lake-dwelling Mesosaurus and the large land-dwelling reptiles Dimetrodon and Edaphosaurus 
A)  lake-dwelling Mesosaurus and large land-dwelling reptile Lystrosaurus and Cynognathus 
B)  freshwater Mesosaurus and dinosaurs Brontosaurus and Tyrannosaurus 
C)  freshwater crocodiles and the large amphibian Eryops 
D)  reptile Dimetrodon and the first bird Archaeopteryx 
E)  lake-dwelling Mesosaurus and the large land-dwelling reptiles Dimetrodon and Edaphosaurus

Question 20

Earth's magnetic poles,where the lines of force leave and enter the planet,do not coincide with the geographic (rotational)poles).

Accepted Answer

A) True 
 B)False

Exam 2: Plate Tectonics: A Unifying Theory

A volcanic hill that is on the seafloor and has a flat top is best called a

At a convergent plate boundary,oceanic crust is ____________________.

Why were glacially deposited strata important in the development of continental drift theory?

What is a method by which the present rate of motion between two plates can be measured accurately?

Describe the features of oceanic trenches.For what geological reasons do the trenches appear like this?

Olympus Mars,the largest volcano in the solar system,is

What was the principal reason why Wegener's theory of continental drift was rejected?

Active volcanism on Venus indicates that the planet has a geologically active interior.

That the oceanic crust is geologically young and the parallel magnetic striping pattern of basalts is symmetrical about oceanic ridges was conclusively shown by what?

Geologists locate plate boundaries ____.

The 2004 Indian Ocean tsunami,the 2010 Indonesian volcanic eruptions and the 2011 Japan earthquake and tsunami are all due to plate tectonics.

Mountain building events occur along ____________________-____________________ or ____________________-____________________ plate boundaries.

What do studies of paleomagnetism show?

Oceanic ridges are geologically stable features where sediments are deposited and nothing much else takes place.

Jupiter's moon,Io,has no impact craters.This means that the moon

The type of plate boundary that runs through California is called ____________________,and the name of this plate boundary is ____________________.

Which of the following was not evidence for Wegener's continental drift hypothesis?

One of the most general conclusions to be drawn from plate tectonic theory is that ____.

Fossil evidence linking the Gondwana continents includes which animal fossils?

Earth's magnetic poles,where the lines of force leave and enter the planet,do not coincide with the geographic (rotational)poles).

Understanding Earth: A Dynamic and Evolving Planet

Minerals The Building Blocks of Rocks

Igneous Rocks and Plutons

Volcanoes and Volcanism

Weathering, Erosion, and Soil

Sediment and Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Earthquakes and Earth's Interior

Deformation,Mountain Building,and Earth's Crust

Mass Wasting

Running Water Streams and Rivers

Groundwater

Glaciers and Glaciation

The Work of Wind and Deserts

Oceans, Shorelines, and Shoreline Processes

Geologic Time: Concepts and Principles

Organic Evolution The Theory and Its Supporting Evidence

Precambrian Earth and Life History

Paleozoic Earth History

Paleozoic Life History

Mesozoic Earth and Life History

Cenozoic Earth and Life History

Geology in Perspective

Filters

Mountain building events occur along - or - plate boundaries.

The type of plate boundary that runs through California is called ,and the name of this plate boundary is .