Fossils

Front

When an organism is quickly buried and flattened by enormous pressure and only the carbon from the organism remains as a thin black film.

Back

carbonized

Front

A record of the activity of an organism such as footprint or scratches.

Back

trace

Front

When an organism's tissues are replaced by minerals from water and form a hard, 3-D copy of the original.

Back

permineralized (petrified)

Tags

NGSS.MS-LS4-1

Front

What happens when an organism gets stuck in tree sap which hardens over time?

Back

Preserved in amber

Front

An impression of an organism's body shape is left in sediment and filled with minerals in water which hardens.

Back

mold and cast

Front

This preserves much of the organism, including the organs and genetic material. It occurs when an organism becomes trapped, dies and is quickly frozen.

Back

frozen

Front

This sticky, thick liquid traps organisms and preserves its hard parts while dissolving the soft body parts.

Back

preserved in a tar pit

Front

Which describes this sedimentary rock? Options: Fault, intrusion, unconformity, extrusion

Back

intrusion

Tags

NGSS.MS-ESS1-4

Front

Which describes this rock formation? Options: faule, intrusion, unconformity, extrusion

Back

unconformity

Front

Which describes this rock formation? Options: fault, intrusion, unconformity, extrusion

Back

extrusion