Fossils REVIEW 2019

Front

What is a cast fossil?

Back

A fossil made inside a mold when minerals seep in and harden into the shape of the mold.

Front

What is a mold fossil?

Back

A type of fossil that is an impression left in sediment, which can be filled with minerals to create a cast.

Front

Which layer of rock is the youngest according to the law of superposition?

Back

The top layer of rock is the youngest.

Front

What type of rock is best for finding fossils?

Back

Sedimentary Rock.

Front

What is the law of superposition?

Back

A geological principle stating that in undisturbed layers of rock, the oldest layers are at the bottom and the youngest are at the top.

Front

What is a trace fossil?

Back

A fossil that provides evidence of the activity of an organism, such as footprints or burrows.

Front

What is petrification?

Back

The process by which organic material becomes fossilized by being replaced with minerals.

Front

What are fossils?

Back

Remains or traces of ancient organisms preserved in rock.

Front

What is sediment?

Back

Small particles of rock and organic material that can accumulate and form sedimentary rock.

Front

What is the difference between a mold and a cast fossil?

Back

A mold is an impression of an organism, while a cast is a solid copy formed when minerals fill the mold.