Earth Science chapter 7 review

Front

What is a geological column?

Back

A geological column is a representation of the layers of rock and sediment that have accumulated over time, showing the sequence of geological events. It is a theoretical construct and does not have real examples.

Front

What is a trace fossil?

Back

A trace fossil is a type of fossil that is formed by the activity of an organism, such as footprints, burrows, or feces, rather than by the organism itself.

Front

Which of the following is NOT a trace fossil?

Back

Bone is not a trace fossil; it is a body fossil.

Front

What is a fossil cast?

Back

A fossil cast is formed when sediments fill a mold of a fossil and then lithify, creating a replica of the original organism.

Front

What is petrification?

Back

Petrification is the process by which an organism's remains are replaced by minerals, preserving the structure of the organism.

Front

What is a coprolite?

Back

A coprolite is a type of fossilized dung that provides information about the diet and behavior of ancient organisms.

Front

What is the difference between a body fossil and a trace fossil?

Back

Body fossils are the remains of the actual organism (like bones or shells), while trace fossils are evidence of the organism's activity (like footprints or burrows).

Front

What does lithification mean?

Back

Lithification is the process of turning sediments into solid rock through compaction and cementation.

Front

What is an index fossil?

Back

An index fossil is a fossil that is used to define and identify a particular time period in the geological time scale, typically widespread and existed for a short duration.

Front

What is the significance of the fossil record?

Back

The fossil record provides evidence of the history of life on Earth, showing how organisms have changed over time and how they relate to one another.