8.E.2.1 Vocab review

Front

What is the relative age of a fossil?

Back

The relative age of a fossil is determined by its position in sedimentary rock layers compared to other fossils and rocks.

Tags

NGSS.MS-ESS1-4

Front

What does the law of crosscutting state?

Back

The law of crosscutting states that a fault or intrusion is younger than the rocks it cuts through.

Tags

NGSS.MS-ESS1-4

Front

What is Absolute or Radioactive Dating?

Back

Absolute or Radioactive Dating is a method of measuring the age of an event or object in nearly exact years, often using the decay of isotopes like Carbon-14 or Uranium-238.

Tags

NGSS.HS-PS1-8

Front

What is a petrified fossil?

Back

A petrified fossil forms when minerals replace the remains of an organism, turning them into rock.

Front

Who proposed the theory of Continental Drift?

Back

Alfred Wegener proposed the theory of Continental Drift.

Tags

NGSS.MS-ESS2-3

Front

What is the difference between relative dating and absolute dating?

Back

Relative dating determines the order of events without providing exact dates, while absolute dating provides a specific age.

Front

What are index fossils?

Back

Index fossils are fossils of organisms that were widespread but only existed for a short period, used to date the rock layers in which they are found.

Tags

NGSS.MS-ESS1-4

Front

What is the significance of the fossil record?

Back

The fossil record provides evidence of the history of life on Earth, showing how species have changed over time.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Front

What is a mold fossil?

Back

A mold fossil is a cavity in rock that has the shape of an organism, formed when the organism decays after being buried.

Front

What is a cast fossil?

Back

A cast fossil is created when a mold fossil is filled with minerals or sediment, creating a replica of the original organism.