Extended Geologic Time and Earth's History

Question 1

The time it takes for HALF of the atoms in a sample of radioactive element to decay is called:

Accepted Answer

Half-life

Question 2

What is this thing?!?!

Accepted Answer

Trilobite

Question 3

The dinosaurs went bye bye how many years ago?

Accepted Answer

65 mya

Question 4

When did the graptolite go extinct?

Accepted Answer

320 mya

Question 5

Put the following mountain ranges in order from oldest to youngest.

Accepted Answer

Appalachian-Rockies-Himalayan

Question 6

Eons are divided into ...

Accepted Answer

Eras

Question 7

Life became dominated by mammals that nursed their young.

Accepted Answer

Cenozoic

Question 8

What ended the dinosaurs reign?

Accepted Answer

A meteoroid impact

Question 9

From the graph on the right, which of the following is an igneous intrusion?

Accepted Answer

D

Question 10

What is the main cause of global climate change (warming) right now?

Accepted Answer

Burning fossil fuels

Question 11

Which of the following is the correct breakdown of the geologic time periods?

Accepted Answer

Eons-Eras-Periods-Epochs

Question 12

The Geologic Time Scale is best described as:

Accepted Answer

A summary of major event's in Earth's past

Question 13

Life became dominated by warm blooded dinosaurs.

Accepted Answer

Mesozoic

Question 14

What geologic era is known as the Age of Mammals?

Accepted Answer

Cenozoic

Question 15

Why study Earth's Geologic Timeline?

Accepted Answer

To understand how climate change may affect us.

Question 16

According to the graph, which animal first appeared about 430 m.y.a.?

Accepted Answer

Acanthodian

Question 17

When a scientist needs to know with confidence the age of a rock, which method would they use?

Accepted Answer

Radiometric dating

Question 18

Which era is known as the Age of Reptiles?

Accepted Answer

Mesozoic

Question 19

We humans live in what era

Accepted Answer

Ceno-zoic

Question 20

From the graph on the right, which of the following is the oldest?

Accepted Answer

C

Question 21

Permian, Triassic, and Tertiary are all known as

Accepted Answer

Periods

Question 22

Which of the following specifically is the result of gravity?

Accepted Answer

Principle of Original Horizontality

Question 23

If one is identifying a general date of time by comparing it to other events, this is...

Accepted Answer

Relative Dating

Question 24

Eras are divided into ...

Accepted Answer

Periods

Question 25

Which of the following understands that species change over time?

Accepted Answer

Principle of Fossil Succession

Question 26

What method of dating do scientists use to determine the age of bones, teeth, organic matter?

Accepted Answer

Carbon -14

Question 27

Which best describes the Paleozoic?

Accepted Answer

Life was mostly aquatic

Question 28

Which of the following is NOT a fact about the Paleozoic Era?

Accepted Answer

Dinosaurs dominated

Question 29

Index fossils and rock correlation are used to determine...

Accepted Answer

the relative age of a rock.

Question 30

Approximately, when did the planet experience the coldest part of this ice age?

Accepted Answer

340,000

Question 31

What fossil fuel used today formed back during the Carboniferous period when swamps existed?

Accepted Answer

Coal

Question 32

Scientists are able to determine the exact age of a rock or fossil through______________

Accepted Answer

Radiometric Dating

Question 33

Periods are divided into ...

Accepted Answer

Epochs

Question 34

Approximately, when did the planet experience the warmest global warming?

Accepted Answer

330,000

Question 35

This rock best represents which principle?

Accepted Answer

Embedded fragments

Question 36

Life did not live beyond the protection of water.

Accepted Answer

Paleozoic

Question 37

Eras are divided into ___________________

Accepted Answer

Periods

Question 38

From the graph on the right, which of the following experiences the angular unconformity ?

Accepted Answer

E

Question 39

From the graph on the right, which of the following follows the Principle of Cross-Cutting?

Accepted Answer

A

Question 40

Which of the following is FALSE about the Cenozoic Era?

Accepted Answer

Stromatolites flourished

Extended Geologic Time and Earth's History

Questions 40

Extended Geologic Time and Earth's History

Questions 40