Historical Geology Review

Which layer is the youngest?

• A
• B
• C
• D

The Law of __________ tells us younger rocks are on top.

• Uniform-itarianism
• Congruity
• Positronics
• Superposition

A fossil found over a large area deposited within a short time period is _____________.

• a specimen interval
• an index fossil
• a time differential
• an indicator marker

What is the order geologic time scales are divided (largest to smallest):

• Epoch, Period, Era
• Era, Epoch, Period
• Period, Epoch, Era
• Era, Period, Epoch

Carbon dating is used on:

• organic samples
• minerals
• metamorphic rocks
• igneous rocks

The Precambrian is the ___________ time span in Earth's history.

• youngest
• latest
• earliest
• middle

Earth today is in ________________.

• Cenozoic era, Quaternary period, Holocene epoch
• Precambrian epoch
• Devonian period, Quaternary era
• Triassic interglacial

Paleozoic is an example of_________.

• an epoch
• an era
• a period
• an eon

In what order do these appear in the geologic record (oldest to youngest)?

• Bacteria, fish, birds, humans
• Bacteria, birds, fish, humans
• Humans, birds, fish, bacteria
• Humans, fish, birds, bacteria

Trilobites are found in the _____________.

• Cenozoic
• Mesozoic
• Paleozoic
• Cretaceous