Question 1

Repeated cycles of glaciations have taken place since the beginning of the

Accepted Answer

A) Paleozoic era. 
B) Paleogene period. 
C) Phanerozoic eon. 
D) Pleistocene epoch. 
A) Paleozoic era. 
B) Paleogene period. 
C) Phanerozoic eon. 
D) Pleistocene epoch.

Question 2

What is considered the starting of the clock for isotopic dating of igneous rocks?

Accepted Answer

A) when the isotope starts to decay 
B) when the isotope is trapped in the magma 
C) when the rock solidifies 
D) when the first daughter forms 
A) when the isotope starts to decay 
B) when the isotope is trapped in the magma 
C) when the rock solidifies 
D) when the first daughter forms

Question 3

When did the horizontal,layered sedimentary rocks in the Grand Canyon form?

Accepted Answer

A) during the Cenozoic 
B) during the Paleozoic 
C) during the Mesozoic 
D) during the Precambrian 
A) during the Cenozoic 
B) during the Paleozoic 
C) during the Mesozoic 
D) during the Precambrian

Question 4

The largest mass extinction event in Earth's history took place at the end of

Accepted Answer

A) the Cretaceous. 
B) the Permian. 
C) the Precambrian. 
D) the Archean. 
A) the Cretaceous. 
B) the Permian. 
C) the Precambrian. 
D) the Archean.

Question 5

When did the oldest rocks,now exposed at the base of the Grand Canyon,form?

Accepted Answer

A) during the Cenozoic 
B) during the Paleozoic 
C) during the Mesozoic 
D) during the Precambrian 
A) during the Cenozoic 
B) during the Paleozoic 
C) during the Mesozoic 
D) during the Precambrian

Question 6

Who proposed the theory of evolution?

Accepted Answer

A) Leonardo da Vinci 
B) William Smith 
C) Charles Darwin 
D) Alfred Wegener 
A) Leonardo da Vinci 
B) William Smith 
C) Charles Darwin 
D) Alfred Wegener

Question 7

The stratigraphic order of the fossils from animal species is known as the

Accepted Answer

A) faunal layering. 
B) faunal succession. 
C) fossil record. 
D) fossil succession. 
A) faunal layering. 
B) faunal succession. 
C) fossil record. 
D) fossil succession.

Question 8

The half-life of a radioactive isotope is

Accepted Answer

A) half the time it takes all the radioactive atoms to decay. 
B) the time it takes for half of the radioactive atoms to decay. 
C) half of the radioactive atom's "full-life." 
D) the average life-span of a stable atom. 
A) half the time it takes all the radioactive atoms to decay. 
B) the time it takes for half of the radioactive atoms to decay. 
C) half of the radioactive atom's "full-life." 
D) the average life-span of a stable atom.

Question 9

Which of the following is in order from the shortest to longest geologic event?

Accepted Answer

A) meteorite impact,evolution of continents,life cycle of ocean lithosphere 
B) evolution of continents,meteorite impact,life cycle of ocean lithosphere 
C) life cycle of ocean lithosphere,evolution of continents,meteorite impact 
D) meteorite impact,life cycle of ocean lithosphere,evolution of continents 
A) meteorite impact,evolution of continents,life cycle of ocean lithosphere 
B) evolution of continents,meteorite impact,life cycle of ocean lithosphere 
C) life cycle of ocean lithosphere,evolution of continents,meteorite impact 
D) meteorite impact,life cycle of ocean lithosphere,evolution of continents

Question 10

Time scales of geologic processes can range from seconds to

Accepted Answer

A) minutes. 
B) days. 
C) years. 
D) billions of years. 
A) minutes. 
B) days. 
C) years. 
D) billions of years.

Question 11

How long did the Proterozoic eon last?

Accepted Answer

A) approximately 500 million years 
B) approximately 1 billion years 
C) approximately 2 billion years 
D) approximately 4 billion years 
A) approximately 500 million years 
B) approximately 1 billion years 
C) approximately 2 billion years 
D) approximately 4 billion years

Question 12

A stratigraphic succession is a vertical set of strata

Accepted Answer

A) bounded above and below by igneous and/or metamorphic rocks. 
B) that is unique to a specific area. 
C) that represents a repeating set of events,such as recurring floods and debris flows. 
D) used as a chronological record of the geologic history of a region. 
A) bounded above and below by igneous and/or metamorphic rocks. 
B) that is unique to a specific area. 
C) that represents a repeating set of events,such as recurring floods and debris flows. 
D) used as a chronological record of the geologic history of a region.

Question 13

Who laid down the foundations of stratigraphy?

Accepted Answer

A) Leonardo da Vinci 
B) William Smith 
C) Nicolaus Steno 
D) James Hutton 
A) Leonardo da Vinci 
B) William Smith 
C) Nicolaus Steno 
D) James Hutton

Question 14

Which of the following materials might be dated using carbon-14?

Accepted Answer

A) granite 
B) iron ore 
C) sandstone 
D) wood 
A) granite 
B) iron ore 
C) sandstone 
D) wood

Question 15

Who invented the geologic map?

Accepted Answer

A) Charles Lyell 
B) William Smith 
C) Nicolaus Steno 
D) James Hutton 
A) Charles Lyell 
B) William Smith 
C) Nicolaus Steno 
D) James Hutton

Question 16

The division of the geologic time scale into units termed eons is based what measurement or observation?

Accepted Answer

A) faunal succession 
B) mass extinction events 
C) isotopic ages 
D) major environmental changes 
A) faunal succession 
B) mass extinction events 
C) isotopic ages 
D) major environmental changes

Repeated cycles of glaciations have taken place since the beginning of the

What is considered the starting of the clock for isotopic dating of igneous rocks?

When did the horizontal,layered sedimentary rocks in the Grand Canyon form?

The largest mass extinction event in Earth's history took place at the end of

When did the oldest rocks,now exposed at the base of the Grand Canyon,form?

Who proposed the theory of evolution?

The stratigraphic order of the fossils from animal species is known as the

The half-life of a radioactive isotope is

Which of the following is in order from the shortest to longest geologic event?

Time scales of geologic processes can range from seconds to

How long did the Proterozoic eon last?

A stratigraphic succession is a vertical set of strata

Who laid down the foundations of stratigraphy?

Which of the following materials might be dated using carbon-14?

Who invented the geologic map?

The division of the geologic time scale into units termed eons is based what measurement or observation?

The Earth System

Plate Tectonics: The Unifying Theory

Earth Materials: Minerals and Rocks

Igneous Rocks: Solids From Melts

Sedimentation: Rocks Formed by Surface Processes

Metamorphism: Alteration of Rocks by Temperature and Pressure

Deformation: Modification of Rocks by Folding and Fracturing

Early History of the Terrestrial Planets

History of the Continents

Geobiology: Life Interacts With Earth

Volcanoes

Earthquakes

Exploring Earths Interior

The Climate System

Weathering,erosion,and Mass Wasting: Interactions Between the Climate and Plate Tectonic Systems

The Hydrologic Cycle and Groundwater

Stream Transport: From Mountains to Oceans

Winds and Deserts

Coastlines and Ocean Basins

Glaciers: the Work of Ice

Landscapes: Tectonic and Climate Interaction

The Human Impact of Earths Environment

Filters

Exam 8: Clocks in Rocks: Timing the Geologic Period

Repeated cycles of glaciations have taken place since the beginning of the

What is considered the starting of the clock for isotopic dating of igneous rocks?

When did the horizontal,layered sedimentary rocks in the Grand Canyon form?

The largest mass extinction event in Earth's history took place at the end of

When did the oldest rocks,now exposed at the base of the Grand Canyon,form?

Who proposed the theory of evolution?

The stratigraphic order of the fossils from animal species is known as the

The half-life of a radioactive isotope is

Which of the following is in order from the shortest to longest geologic event?

Time scales of geologic processes can range from seconds to

How long did the Proterozoic eon last?

A stratigraphic succession is a vertical set of strata

Who laid down the foundations of stratigraphy?

Which of the following materials might be dated using carbon-14?

Who invented the geologic map?

The division of the geologic time scale into units termed eons is based what measurement or observation?

The Earth System

Plate Tectonics: The Unifying Theory

Earth Materials: Minerals and Rocks

Igneous Rocks: Solids From Melts

Sedimentation: Rocks Formed by Surface Processes

Metamorphism: Alteration of Rocks by Temperature and Pressure

Deformation: Modification of Rocks by Folding and Fracturing

Early History of the Terrestrial Planets

History of the Continents

Geobiology: Life Interacts With Earth

Volcanoes

Earthquakes

Exploring Earths Interior

The Climate System

Weathering,erosion,and Mass Wasting: Interactions Between the Climate and Plate Tectonic Systems

The Hydrologic Cycle and Groundwater

Stream Transport: From Mountains to Oceans

Winds and Deserts

Coastlines and Ocean Basins

Glaciers: the Work of Ice

Landscapes: Tectonic and Climate Interaction

The Human Impact of Earths Environment

Filters