Question 1

Which proportion of a radioactive isotope is expected to remain in an unaltered (unreacted)state after the passage of three half-lives?

Accepted Answer

A)  one-third 
B)  three-halves 
C)  one-eighth 
D)  one-sixth 
A)  one-third 
B)  three-halves 
C)  one-eighth 
D)  one-sixth

Question 2

The marble rind surrounding the granite pluton must be younger than the limestone according to the principle of ____________.

Accepted Answer

A)  superposition 
B)  baked contacts 
C)  original horizontality 
D)  original continuity 
A)  superposition 
B)  baked contacts 
C)  original horizontality 
D)  original continuity

Question 3

In the 1800s Lord Kelvin estimated the age of the Earth,utilizing a number of assumptions.Which wrong assumption was the primary reason why his estimate (approximately 20 million years)was so wildly inaccurate?

Accepted Answer

A)  The Earth was once hotter than it presently is today. 
B)  The Earth may have been molten when first formed. 
C)  No new heat has been added to the Earth since its initial formation. 
D)  The Earth would lose heat over time through radiation into outer space. 
A)  The Earth was once hotter than it presently is today. 
B)  The Earth may have been molten when first formed. 
C)  No new heat has been added to the Earth since its initial formation. 
D)  The Earth would lose heat over time through radiation into outer space.

Question 4

Which of the following geologic principles is a direct result of gravity?

Accepted Answer

A)  baked contacts 
B)  cross-cutting relationships 
C)  original horizontality 
D)  inclusions 
A)  baked contacts 
B)  cross-cutting relationships 
C)  original horizontality 
D)  inclusions

Question 5

In the area immediately surrounding an igneous intrusion,a host limestone is locally metamorphosed to produce marble.Which of the following statements is correct?

Accepted Answer

A)  The intrusive igneous rock must be older than the limestone. 
B)  The limestone must be older than the marble. 
C)  The marble must be older than the intrusive rock. 
D)  The relative ages of the three units cannot be determined with the information given. 
A)  The intrusive igneous rock must be older than the limestone. 
B)  The limestone must be older than the marble. 
C)  The marble must be older than the intrusive rock. 
D)  The relative ages of the three units cannot be determined with the information given.

Which proportion of a radioactive isotope is expected to remain in an unaltered (unreacted)state after the passage of three half-lives?

The marble rind surrounding the granite pluton must be younger than the limestone according to the principle of ____________.

In the 1800s Lord Kelvin estimated the age of the Earth,utilizing a number of assumptions.Which wrong assumption was the primary reason why his estimate (approximately 20 million years)was so wildly inaccurate?

Which of the following geologic principles is a direct result of gravity?

In the area immediately surrounding an igneous intrusion,a host limestone is locally metamorphosed to produce marble.Which of the following statements is correct?

The Earth in Context

The Way the Earth Works: Plate Tectonics

Patterns in Nature: Minerals

Up From the Inferno: Magma and Igneous Rocks

The Wrath of Vulcan: Volcanic Eruptions

Pages of Earths Past: Sedimentary Rocks

Metamorphism: a Process of Change

A Violent Pulse: Earthquakes

Crags, cracks, and Crumples: Crustal Deformation and Mountain Building

A Biography of Earth

Riches in Rock: Energy and Mineral Resources

Unsafe Ground: Landslides and Other Mass Movements

Running Water: the Geology of Streams and Floods

Restless Realm: Oceans and Coasts

A Hidden Reserve: Groundwater

Dry Regions: the Geology of Deserts

Amazing Ice: Glaciers and Ice Ages

Global Change in the Earth System

Filters

Exam 10: Deep Time: How Old Is Old

Which proportion of a radioactive isotope is expected to remain in an unaltered (unreacted)state after the passage of three half-lives?

The marble rind surrounding the granite pluton must be younger than the limestone according to the principle of ____________.

In the 1800s Lord Kelvin estimated the age of the Earth,utilizing a number of assumptions.Which wrong assumption was the primary reason why his estimate (approximately 20 million years)was so wildly inaccurate?

Which of the following geologic principles is a direct result of gravity?

In the area immediately surrounding an igneous intrusion,a host limestone is locally metamorphosed to produce marble.Which of the following statements is correct?

The Earth in Context

The Way the Earth Works: Plate Tectonics

Patterns in Nature: Minerals

Up From the Inferno: Magma and Igneous Rocks

The Wrath of Vulcan: Volcanic Eruptions

Pages of Earths Past: Sedimentary Rocks

Metamorphism: a Process of Change

A Violent Pulse: Earthquakes

Crags, cracks, and Crumples: Crustal Deformation and Mountain Building

A Biography of Earth

Riches in Rock: Energy and Mineral Resources

Unsafe Ground: Landslides and Other Mass Movements

Running Water: the Geology of Streams and Floods

Restless Realm: Oceans and Coasts

A Hidden Reserve: Groundwater

Dry Regions: the Geology of Deserts

Amazing Ice: Glaciers and Ice Ages

Global Change in the Earth System

Filters