Week 2

Question 1

A record of life forms and geological events in Earth’s history.

Answer 1

Geological time scale

Question 2

are a set of principles that describe how rock layers are deposited and change over time. These laws are used to identify strata and understand Earth’s history.

Answer 2

Stratigraphic laws

Question 3

Remnant, impression, or trace of an animal or plant of a past geologic age that has been preserved in Earth’s crust.

Answer 3

Fossils

Question 4

Major geological events

Answer 4

Eons
Era
Periods
Epoch

Question 5

Eon

Answer 5

Hadean
Archean
Proterozoic
Phanerozoic

Question 6

Era

Answer 6

Paleozoic
Mesozoic
Cenozoic

Question 7

Periods

Answer 7

Cambrian
Ordovician
Silurian
Devonian
Carboniferous
Triassic
Jurassic
Cretaceous
Tertiary
Quarternary

Question 8

Epochs

Answer 8

Paleocene
Eocene
Oligocene
Miocene
Pliocene
Pleistocene
Holocene

Question 9

__, The largest division of geologic time scale; -__to nearly __ of years.

Answer 9

Eons
Half billion
Billions

Question 10

Eons is divided to two

Answer 10

Precambrian
Phanerozoic

Question 11

Precambrian
__% of the Earth’s History
Composes of

Answer 11

88%
Hadean
Archean
Proterozoic

Question 12

derived from the word Hades (god of the underworld in Greek mythology)

Answer 12

Hadean eon

Question 13

__, Presence of __ due to the emergence of __.

Answer 13

Proterozoic eon
Oxygen
Cyanobacteria

Question 14

Present eon

Answer 14

Phanerozoic Eon

Question 15

Phanerozoic is subdivided into 3 eras

Answer 15

Paleozoic
Mesozoic
Cenozoic

Question 16

__, periods of __ to __ years.

Answer 16

Era
Tens
Hundreds of million

Question 17

Paleozoic era is also called__, started __ million years ago.

Answer 17

Ancient or old life
540

Question 18

Peiods are no more than __

Answer 18

Million of years

Question 19

Explosion of new kinds of organisms

Answer 19

Cambrian period

Question 20

__, Many types of primitive animals called __ evolved

Answer 20

Cambrian
Sponges

Question 21

__, Small ocean invertebrates (Animals without backbones) called __.

Answer 21

Cambrian
Trilobites

Question 22

The ocean were filled with invertebrates of many types.

Answer 22

Ordovician

Question 23

The first fish evolved.

Answer 23

Ordovician

Question 24

Plants colonized the land for the first time, but animals still remained in water.

Answer 24

Ordovician

Question 25

In the oceans, corals appeared and fish continued to evolve.

Answer 25

Silurian

Question 26

The first seed plant evolved.

Answer 26

Devonian

Question 27

Seeds had a protective coat and stored food to help them survive. Seed plants eventually the most common type of land plants.

Answer 27

Devonian

Question 28

__, Fish with __ evolved. They could breathe air when they raise their heads above water.

Answer 28

Devonian Lobe fins

Question 29

With special tissues to circulate water and other materials, they could grow larger than earlier. Non vascular plants.

Answer 29

Silurian

Question 30

Widespread forests of huge plants left massive deposits of carbon that eventually turned to coal.

Answer 30

Carboniferous

Question 31

The first amphibians evolved to colonize land, but they had to return to the water to reproduce.

Answer 31

Carboniferous

Question 32

The first reptiles evolved. They were the first animals that could reproduce on dry land.

Answer 32

Carboniferous Period

Question 33

All the major land masses collided to form the supercontinent.

Answer 33

Permian

Question 34

Temperatures were extreme, and the climate was dry.

Answer 34

Permian

Question 35

Temperatures were extreme, and the climate was dry. Plants and animals evolved adaptations to dryness, such as waxy leaves or leathery skin to prevent water loss.

Answer 35

Permian

Question 36

The first dinosaurs branched off from the reptiles and colonized and colonized the land, air, and water.

Answer 36

Triassic Period

Question 37

Huge seed ferns and conifers dominated the forests, and modern corals, fish, and insects evolved.

Answer 37

Triassic

Question 38

The Supercontinent started to separate.

Answer 38

Triassic

Question 39

Dinosaurs reached their peak in size and distribution.

Answer 39

Cretaceous Period

Question 40

Earth’s overall climate was warm; even the poles lacked of ice.

Answer 40

Cretaceous

Question 41

This period ended with the dramatic extinction of the dinosaurs.

Answer 41

Cretaceous Period

Question 42

The continents were close to their current location today.

Answer 42

Cretaceous Period

Question 43

__, “Recent Life”; started __ million years ago and continues up to the present. “Age of Mammals”

Answer 43

Cenozoic era 65

Question 44

Earth’s climate was generally warm and humid. Mammals evolved

Answer 44

Tertiary Period