Unit Test Review: Fossils and Geologic Time Scale

Front

What is a trace fossil?

Back

A trace fossil is a type of fossil that provides evidence of the activity of ancient organisms, such as footprints, burrows, or feces.

Front

What is carbonization in fossils?

Back

Carbonization is a fossilization process where organic material is reduced to a thin film of carbon, preserving the outline of the organism.

Front

In which era did mammals become the dominant group?

Back

Mammals became the dominant group in the Cenozoic era.

Front

What is a half-life in geology?

Back

Half-life is the time it takes for a radioactive isotope to decay to half its original mass.

Tags

NGSS.HS-PS1-8

Front

What are fossils?

Back

Fossils are the preserved remains or traces of living things, such as bones, shells, or imprints.

Tags

NGSS.MS-LS4-1

Front

What is a cast fossil?

Back

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

Tags

NGSS.MS-LS4-1

Front

What is a mold fossil?

Back

A mold fossil is an impression left in sediment that shows the shape of an organism.

Front

What is a carbon film fossil?

Back

A carbon film fossil is a type of fossil where the organic material is reduced to a thin layer of carbon, preserving details of the organism.

Front

What is a resin fossil?

Back

A resin fossil, also known as amber, is formed when tree resin traps and preserves organisms.

Front

What is the significance of the Geologic Time Scale?

Back

The Geologic Time Scale is a system that categorizes Earth's history into different time periods based on geological and biological events.

Tags

NGSS.MS-ESS1-4