Vocabulary
Illustrations
Critical Thinking!
100
actual age of an object or how long ago an event occurred by using radioactive dating.
Absolute Age
100
What type of rock is labeled youngest?
3
100
The statement, “The oldest rocks are on the bottom and younger rocks are at the top,” describes which of the following?
A.Theory of Plate Tectonics
B. Law of Superposition
C. Scientific Method
D.Law of Conservation of Matter
B. Law of Superposition
200
What is our current era?
Cenozoic Era
200
Which letter represents intrusion?
R
200
What is the difference between relative dating and absolute dating?
A.Relative dating provides the exact age of rock, while absolute dating provides a rough estimate of the rock’s age
B.Relative dating can estimate a rock’s age only in relation to other objects or events, while absolute dating can provide an actual age.
C.Relative dating uses several types of radioactive decay to determine an object’s relative age, while absolute dating only uses half-life or uranium 235.
D.Relative dating and absolute dating can only determine the rock’s age in relation to other objects or events.
B
300
age of an object compared to another- “I am older than you
Relative Age
300
Which layer of rock is the youngest?
Top/1
300
There is a rock surface that represents a gap of about 1 billion years between two rock layers. What is this an example of?
a. fossilization
b. unconformity
c. extinction of species
d. volcanic eruption
B
400
The method of finding the age of an object in relation to other objects.
Relative Dating
400
Which letter is the fault line?
E
400
Scientists uncover mammoth bones and are able to determine the amount of carbon-14 in the bones. Which best explains the use of carbon-14 in studying the mammoth?
A.It identifies the species of mammoth
B.It identifies the diet of the mammoth
C.It determines the age of the mammoth
D.It determines the cause of death of the mammoth
C
500
In horizontal sedimentary rock layers the oldest layer is at the bottom. Each higher layer is younger than the layers below
Law of Superposition
500
Which layer is the youngest?
H
500
The largest mass extinction in Earth's history occurred during which geologic era?
A.Mesozoic
B.Cenozoic
C.Paleozoic
D.Jurassic
A