Biological Evidence and the Fossil Record — Unit test

Question 1

In rock layers, jellyfish fossils are found lower than trilobite fossils, and trilobite fossils are found lower than ammonite fossils. What can be determined from this information?

Revolt · Accepted Answer

Jellyfish existed before trilobites and ammonites.

Question 2

The image shows locations of fossils from different geologic periods in Virginia.Which association correctly links the time period with the location of the fossils?

Revolt · Accepted Answer

Tertiary eastern Virginia

Question 3

Which statement describes the law of superposition?

Revolt · Accepted Answer

In horizontal rock layers, each layer is younger than the one below it.

Question 4

Which statement accurately describes a half-life?

Revolt · Accepted Answer

A half-life is the time required for half of a radioactive element to decay.

Question 5

The image shows sedimentary rock layers.

Revolt · Accepted Answer

4

Question 6

Which of these are most likely homologous structures? bat wing dragonfly wing Tyrannosaurus arm

Revolt · Accepted Answer

bat wing and Tyrannosaurus arm

Question 7

Which important event in Earth’s history occurred during the Jurassic period?

Revolt · Accepted Answer

The first birds emerged on Earth.

Question 8

Which period belongs to the Paleozoic era and not the Cenozoic era?

Revolt · Accepted Answer

Devonian

Question 9

Which characteristic of potassium makes it useful for dating rocks?

Revolt · Accepted Answer

It has a long half-life.

Question 10

What determines the length of a geologic time period?

Revolt · Accepted Answer

fossil record

Biological Evidence and the Fossil Record — Unit test Answers

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