Quiz about Geology Concepts and Definitions 1.0

Question 1

The concept that the same geologic processes we observe today have been at work throughout Earth's history is known as ____. A) Geologic column B) Unconformity C) Absolute dating D) Uniformitarianism.

Accepted Answer

Uniformitarianism

Answer

Geologic column

Answer

Unconformity

Answer

Absolute dating

Question 2

Which dating method uses the decay of radioactive isotopes to determine the age of rocks?

Accepted Answer

Radiometric dating

Answer

Ice core

Answer

Uniformitarianism

Answer

Superposition

Question 3

A geologic column is a model of rock layers that ____.

Accepted Answer

Shows the sequence of events

Answer

Determines the age of fossils

Answer

Explains current geologic processes

Answer

Measures ice cores.

Question 4

What is the term for the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock?

Accepted Answer

Fossil

Answer

Radiometric dating

Answer

Ice core

Answer

Half-life

Question 5

The principle that in a series of sedimentary rock layers, the oldest layer is at the bottom and the layers get younger as you move up is called ______.

Accepted Answer

Superposition

Answer

Half-life

Answer

Geologic column

Answer

Relative dating

Question 6

The arrangement of rock layers in which the oldest rocks are at the bottom is known as ______.

Accepted Answer

Geologic column

Answer

Ice core

Answer

Fossil

Answer

Climate

Question 7

A break in the geologic record created when rock layers are eroded or when sediment is not deposited for a long period is called ______.

Accepted Answer

Unconformity

Answer

Geologic column

Answer

Fossil

Answer

Climate

Question 8

The concept that the same geological processes we observe today have been at work throughout Earth's history is known as ______.

Accepted Answer

Uniformitarianism

Answer

Geologic column

Answer

Fossil

Answer

Climate

Question 9

What is the method of determining the absolute age of an object by comparing the relative percentages of a radioactive (parent) isotope and a stable (daughter) isotope?

Accepted Answer

Radiometric dating

Answer

Relative dating

Answer

Absolute dating

Answer

Fossil dating

Question 10

The process by which a radioactive isotope breaks down into a stable isotope is called _______.

Accepted Answer

Radioactive decay

Answer

Radiometric dating

Answer

Absolute dating

Answer

Fossilization

Question 11

The process of a radioactive isotope breaking down into a stable isotope is called _______.

Accepted Answer

Radioactive decay

Answer

Radiometric dating

Answer

Absolute dating

Answer

Fossilization

Question 12

What is the definition of 'half-life'?

Accepted Answer

The time required for half of a sample of a radioactive decay to form a daughter isotope.

Answer

The weather conditions in an area over a long period of time.

Answer

Any method of measuring the age of an event or object in years.

Answer

The study of rocks and Earth's physical structure.

Question 13

What does 'unconformity' refer to in geology?

Accepted Answer

A gap in the geological record.

Answer

The time required for half of a sample of a radioactive decay to form a daughter isotope.

Answer

The weather conditions in an area over a long period of time.

Answer

Any method of measuring the age of an event or object in years.

Question 14

Fill in the blank: The time required for half of a sample of a radioactive decay to form a daughter isotope is called ________.

Accepted Answer

Half-life

Answer

Climate

Answer

Geology

Answer

Radiometric dating

Question 15

Fill in the blank: The ________ is a method used to divide Earth's history into parts.

Accepted Answer

Geologic time scale

Answer

Fossil

Answer

Climate

Answer

Relative dating

Geology Concepts and Definitions 1.0

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