Fossils-4th Grade

Front

What is a true form fossil?

Back

A true form fossil is a fossil that is formed when an organism is trapped in substances like tar, ice, or amber, preserving its actual form.

Front

What is sediment?

Back

Sediment is sand and dirt that settles to the bottom of bodies of water, which can eventually form sedimentary rock.

Front

Which layer of the Earth contains the newest or youngest fossils?

Back

The top layer of the Earth contains the newest or youngest fossils.

Tags

NGSS.MS-ESS1-4

Front

What is the third step in the fossil formation process?

Back

The third step is the movement of tectonic plates, which can cause layers to shift and expose fossils.

Front

What is a trace fossil?

Back

A trace fossil is a type of fossil that shows evidence of animal activity, such as footprints, burrows, or nests.

Tags

NGSS.MS-LS4-1

Front

What is a mold fossil?

Back

A mold fossil is an imprint left by an ancient organism in sediment, creating a hollow shape of the organism.

Front

What is a cast fossil?

Back

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

Front

What is the role of erosion in fossil formation?

Back

Erosion can expose fossils by wearing away layers of rock and sediment that cover them.

Tags

NGSS.MS-ESS2-3

Front

How do fossils help scientists?

Back

Fossils help scientists understand the history of life on Earth, including how organisms evolved and how environments changed.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Front

What is amber?

Back

Amber is hardened tree sap that can preserve small organisms, such as insects, in their original form.

Tags

NGSS.MS-LS4-1