Unit E and F

The Law of Superposition helps scientists to determine what?

• The absolute age of rock layers
• The age of fossils
• The relative age of rock layers
• the super powers of rocks

According to the law of superposition, the oldest fossils are found 

• At the top of the rock layers
• Near the bottom of the rock layers
• In the middle of the rock layers
• Somewhat near the surface

_{Which rock layer in the diagram seems to be the oldest?}

• F
• E
• B
• A

According to the law of superposition, which layer is the youngest?

• A
• B
• C

division in Earth's history into time units based on the types of life-forms that lived only during certain period

• Geologic Time Scale

• Fossil Record

• Relative Age

• Law of Superposition

the collective group of all fossils already discovered

• Geologic Time Scale

• Fossil Record

• Relative Age

• Law of Superposition

the age of something compared to other things

• Geologic Time Scale

• Fossil Record

• Relative Age

• Law of Superposition

remains of a species that existed on Earth for a relatively short period of time, were abundant and geographically widespread, and can be used by geologists to assign ages to rock layers

• Index Fossils

• Ice Cores

• Trilobites

• Absolute Age

a core sample that is typically removed from an ice sheet, most commonly from polar ice

• Index Fossils

• Ice Cores

• Trilobites

• Absolute Age

age, in years, of a rock or other object; can be determined using properties of the atoms that make up the object

• Index Fossils

• Ice Cores

• Trilobites

• Absolute Age