Geologic Time

A fossilized tooth is found at the beach. This is an example of a ___

• body fossil

• preserved stone

• trace fossil

_______ fossils are burrows, tracks, or fossilized coprolites (feces).

• body

• soft

• trace

• bone

A mold filled with sediment and hardened to create a replica of the original fossil is known as a cast fossil.

• True

• False

____ can be used to identify a specific period of time.

• Index fossils

• Body fossils

• Trace fossils

• Complete fossils

The oldest rocks are found ____ of a a sequence.

• at the top

• in the middle

• at the bottom

• none of these

Fossils are found in which rock type?

• Metamorphic

• sedimentary rock

• igneous rock

• none of these

The principle of ____ states that in a sequence of rock layers by the relative age.

• cross-cutting relationships

• faunal succession

• lateral continuity

• Superposition

Which of the following is used to determine the relative ages of the rock?

• cross-cutting relationships

• superposition

• fossils

• All of the above

If two rock layers in different locations share the same index fossils, what is most likely true about them?

• They are roughly the same depth in the earth.

• They used to be the same rock.

• They are located in same country.

• They are approximately the same age.

The timeline of Earth's history was constructed by geologists through ____.

• Radiometric dating

• Investigating rock layers

• All the above