Chapter 2: Geological Time Test

Front

What is a cast in geology?

Back

A solid copy of the shape of an organism.

Front

What are petrified fossils?

Back

Fossils in which minerals replace all or part of an organism.

Front

Can all elements decay over time?

Back

False.

Front

What is relative age in geology?

Back

The age of rock compared with the age of other rocks.

Front

What is a mold in geology?

Back

A hollow area in sediment in the shape of an organism.

Front

What is a fossil?

Back

The preserved remains or traces of a once-living organism.

Front

What is the difference between absolute age and relative age?

Back

Absolute age is the exact age of a rock, while relative age compares the age of rocks.

Front

What are index fossils?

Back

Fossils used to define and identify a particular time period in the geological time scale.

Front

What is the geological time scale?

Back

A system of chronological dating that relates geological strata to time.

Front

What is the significance of sedimentary rock in fossil formation?

Back

Sedimentary rock often contains fossils because it forms from particles that can trap and preserve organisms.