Question 1

Both long-lived, naturally occurring, uranium isotopes decay through a series of intermediate, radioactive, daughter isotopes to stable isotopes of ________.

Accepted Answer

A) carbon 
B) thorium 
C) radon 
D) lead 
A) carbon 
B) thorium 
C) radon 
D) lead

Question 2

Why are the successive periods and epochs of the geologic time scale of unequal lengths?

Accepted Answer

A) The passage of time has been speeding up and the length of the day is variable. 
B) It is based on evolution and some creatures are slow learners. 
C) The periods and epochs are based on the duration of unique environments like basins, or events in earth history like extinctions, and orogenies which happen intermittently. 
D) They were originally all of equal duration but most of them got eroded and are full of unconformities. 
A) The passage of time has been speeding up and the length of the day is variable. 
B) It is based on evolution and some creatures are slow learners. 
C) The periods and epochs are based on the duration of unique environments like basins, or events in earth history like extinctions, and orogenies which happen intermittently. 
D) They were originally all of equal duration but most of them got eroded and are full of unconformities.

Question 3

The half-life of carbon-14 is about 5730 years.Assume that a sample of charcoal formed by burning wood that lived 15,000 years ago.How much of the original carbon-14 would remain today?

Accepted Answer

A) 1/4 to 1/8 
B) >1/2 
C) 1/2 to 1/4 
D) 1/8 to 1/16 
A) 1/4 to 1/8 
B) >1/2 
C) 1/2 to 1/4 
D) 1/8 to 1/16

Question 4

What are the massive particle types in the nuclei of atoms?

Accepted Answer

protons an

Question 5

Unconformities often mark times of uplift and erosion.

Accepted Answer

A) True 
 B)False

Question 6

In addition to the law of superposition, Nicolaus Steno is credited with first recognizing the principle or law of ________.

Accepted Answer

original h

Question 7

Compare and contrast relative age dating with radiometric age dating.What is a limitation (if any)of each?

Accepted Answer

Relative dating techniques tell whether

Question 8

Who obtained the Nobel prize in Chemistry in 1960 for his earlier development of the C-14 dating method?

Accepted Answer

Willard F.Libby whil

Question 9

Examine the illustration below (a cross section through rocks as you might observe on the wall of a quarry or a road cut).Give two reasons why the granite must be older than the sedimentary layers.

Accepted Answer

The sedimentary layers are deposited on

Question 10

Which organisms were benthic (bottom dwellers)and extensively used as index fossils respectively for the Mesozoic and Lower Paleozoic?

Accepted Answer

A) ammonoids and conodonts 
B) chitnozoans and graptolites 
C) diatoms and diatoms 
D) flatclams and trilobites 
A) ammonoids and conodonts 
B) chitnozoans and graptolites 
C) diatoms and diatoms 
D) flatclams and trilobites

Question 11

Which two Paleozoic periods in the United States are grouped into one period (the Carboniferous)in most other parts of the world?

Accepted Answer

Mississipp

Question 12

Complex, invertebrate, life forms are common as fossils, beginning with marine strata of Cambrian age.How long ago did the Cambrian Period begin?

Accepted Answer

A) 4.6 billion years 
B) 66 million years 
C) 541 million years 
D) 541 billion years 
A) 4.6 billion years 
B) 66 million years 
C) 541 million years 
D) 541 billion years

Question 13

Which type of microfossils are organic walled cysts of planktonic algae primarily used in relative dating?

Accepted Answer

A) acritarchs and dinoflagellates 
B) coccoliths and formaminifera 
C) conodonts 
D) diatoms and radiolaria 
A) acritarchs and dinoflagellates 
B) coccoliths and formaminifera 
C) conodonts 
D) diatoms and radiolaria

Question 14

What principle of relative dating is illustrated by the dykes and faults in the diagram below?

Accepted Answer

cross-cutt

Question 15

Phanerozoic, marine, sedimentary strata of the same age on different continents can usually be correlated by their fossil assemblages.

Accepted Answer

A) True 
 B)False

Question 16

Correlation of rock units between continents or widely separated areas is accomplished by using physical features such as colour, texture, and thickness of units.

Accepted Answer

A) True 
 B)False

Question 17

What process involves identifying and matching rocks of similar ages in different areas?

Accepted Answer

The answer of What process involves identifying and matching rocks...

Question 18

In relative dating, the principle of cross-cutting relationships allows one to infer that the rock body that does the cutting is clearly older.

Accepted Answer

A) True 
 B)False

Question 19

What is the age of the Earth accepted by most scientists today?

Accepted Answer

A) 540 billion years 
B) 4.6 million years 
C) 4.6 billion years 
D) about 4600 thousand years 
A) 540 billion years 
B) 4.6 million years 
C) 4.6 billion years 
D) about 4600 thousand years

Question 20

What is the important limitation of the K/Ar radiometric clock?

Accepted Answer

Because Ar is a noble gas it i

Both long-lived, naturally occurring, uranium isotopes decay through a series of intermediate, radioactive, daughter isotopes to stable isotopes of ________.

Why are the successive periods and epochs of the geologic time scale of unequal lengths?

The half-life of carbon-14 is about 5730 years.Assume that a sample of charcoal formed by burning wood that lived 15,000 years ago.How much of the original carbon-14 would remain today?

What are the massive particle types in the nuclei of atoms?

Unconformities often mark times of uplift and erosion.

In addition to the law of superposition, Nicolaus Steno is credited with first recognizing the principle or law of ________.

Compare and contrast relative age dating with radiometric age dating.What is a limitation (if any)of each?

Who obtained the Nobel prize in Chemistry in 1960 for his earlier development of the C-14 dating method?

Examine the illustration below (a cross section through rocks as you might observe on the wall of a quarry or a road cut).Give two reasons why the granite must be older than the sedimentary layers.

Which organisms were benthic (bottom dwellers)and extensively used as index fossils respectively for the Mesozoic and Lower Paleozoic?

Which two Paleozoic periods in the United States are grouped into one period (the Carboniferous)in most other parts of the world?

Complex, invertebrate, life forms are common as fossils, beginning with marine strata of Cambrian age.How long ago did the Cambrian Period begin?

Which type of microfossils are organic walled cysts of planktonic algae primarily used in relative dating?

What principle of relative dating is illustrated by the dykes and faults in the diagram below?

Phanerozoic, marine, sedimentary strata of the same age on different continents can usually be correlated by their fossil assemblages.

Correlation of rock units between continents or widely separated areas is accomplished by using physical features such as colour, texture, and thickness of units.

What process involves identifying and matching rocks of similar ages in different areas?

In relative dating, the principle of cross-cutting relationships allows one to infer that the rock body that does the cutting is clearly older.

What is the age of the Earth accepted by most scientists today?

What is the important limitation of the K/Ar radiometric clock?

An Introduction to Geology and Plate Tectonics

Minerals: The Building Blocks of Rocks

Igneous Rocks

Volcanoes and Volcanic Processes

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Crustal Deformation

Earthquakes and Earth's Interior

The Ocean Floor

Plate Tectonics: The Framework for Modern Geology

Mountain Building and Continental Frameworks

Mass Wasting: The Work of Gravity

Running Water

Groundwater

Glaciers and Glaciation

Deserts and Winds

Shorelines

Mineral and Energy Resources

Filters

Exam 8: Geologic Time

Both long-lived, naturally occurring, uranium isotopes decay through a series of intermediate, radioactive, daughter isotopes to stable isotopes of ________.

Why are the successive periods and epochs of the geologic time scale of unequal lengths?

The half-life of carbon-14 is about 5730 years.Assume that a sample of charcoal formed by burning wood that lived 15,000 years ago.How much of the original carbon-14 would remain today?

What are the massive particle types in the nuclei of atoms?

Unconformities often mark times of uplift and erosion.

In addition to the law of superposition, Nicolaus Steno is credited with first recognizing the principle or law of ________.

Compare and contrast relative age dating with radiometric age dating.What is a limitation (if any)of each?

Who obtained the Nobel prize in Chemistry in 1960 for his earlier development of the C-14 dating method?

Examine the illustration below (a cross section through rocks as you might observe on the wall of a quarry or a road cut).Give two reasons why the granite must be older than the sedimentary layers.

Which organisms were benthic (bottom dwellers)and extensively used as index fossils respectively for the Mesozoic and Lower Paleozoic?

Which two Paleozoic periods in the United States are grouped into one period (the Carboniferous)in most other parts of the world?

Complex, invertebrate, life forms are common as fossils, beginning with marine strata of Cambrian age.How long ago did the Cambrian Period begin?

Which type of microfossils are organic walled cysts of planktonic algae primarily used in relative dating?

What principle of relative dating is illustrated by the dykes and faults in the diagram below?

Phanerozoic, marine, sedimentary strata of the same age on different continents can usually be correlated by their fossil assemblages.

Correlation of rock units between continents or widely separated areas is accomplished by using physical features such as colour, texture, and thickness of units.

What process involves identifying and matching rocks of similar ages in different areas?

In relative dating, the principle of cross-cutting relationships allows one to infer that the rock body that does the cutting is clearly older.

What is the age of the Earth accepted by most scientists today?

What is the important limitation of the K/Ar radiometric clock?

An Introduction to Geology and Plate Tectonics

Minerals: The Building Blocks of Rocks

Igneous Rocks

Volcanoes and Volcanic Processes

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Crustal Deformation

Earthquakes and Earth's Interior

The Ocean Floor

Plate Tectonics: The Framework for Modern Geology

Mountain Building and Continental Frameworks

Mass Wasting: The Work of Gravity

Running Water

Groundwater

Glaciers and Glaciation

Deserts and Winds

Shorelines

Mineral and Energy Resources

Filters