Earth Geological History | Study Cards

Question 1

List the Eras from oldest to current

Answer 1

Paleozoic Era

Mesozoic Era

Ceriozoic Era

Question 2

List the periods in the Paleozoic Era in order from oldest to recent (in that time span)

Answer 2

1) Cambrian Period
2) Ordovican Period
3) Silurian Period
4) Carboniferous Period
5) Permian Period

Question 3

Which 2 periods in the Paleozoic Era had extinction events?

Answer 3

Ordovican & Permian Periods

Question 4

What was the Cambrian Explosion?

Answer 4

when all major phyla (animals) began to appear in the fossil record. This mainly refers to marine life as the land was still barren.

Question 5

Which period in the Paleozoic Era did the ancestors of modern animals appear?

Answer 5

Cambrian

Question 6

What is the idea behind the name of the Cambrian Explosian?

Answer 6

named thusly because of the relatively short period of time such a diversity of life formed

Question 7

What is the Ordovician Period known for?

Answer 7

Best known for its diverse marine invertebrates.

Question 8

Describe the Ordovician Period’s Extinction Event?

Answer 8

Brought upon when the Supercontinent Godwana drifted South which caused it’s temperatures to drop, and caused massive glaciers to form which caused the sea level to drop

Question 9

What period did terrestrial anthropods begin to colonize the land

Answer 9

Silurian period

Question 10

When did the first jawed fish & vascular plants appeafr

Answer 10

Silurian period

Question 11

Why was the Carboniferous Period named that

Answer 11

because this is where our modern coal deposits were founded

Question 12

What was the extincition event for the Permian Period

Answer 12

Huge volcanic eruptions caused massive extinctions which killed 85& of species.

Question 13

Which period had the most severe extinction event in history>

Answer 13

Permian Period

Question 14

Which period did the continenets come together to form Pangea

Answer 14

Permain Period

Question 15

What was the Mesozoic Era known as

Answer 15

The age of reptiles

Question 16

List the Mesozoic Era in order

Answer 16

1) Triassic Period
2) Jurassic Period
3) Cretaceus Period

Question 17

What species dominated the Triassic period?

Answer 17

Archosuars

Question 18

What period in the Mesozoic era did Pangea begin to break up

Answer 18

Triassic Period

Question 19

What was the Jurassic Period known for

Answer 19

When dinosuars ruled

Question 20

What did frogs, salamanders, lizards, and mammals begin to appear?

Answer 20

In the Jurrassic Period

Question 21

What was the Extinction Event in the Creataceous Period

Answer 21

Brought upon by an asteroid impact near the Yucatan Peninsula which triggered volcanic eruptions

The volcanic eruptions caused soot and smoke to block out the sun

Question 22

List the Ceriozoic Era in order

Answer 22

Paleogene Period

Neogene Period

Quaternary Period

Question 23

What was the Paleogene Period known for

Answer 23

Characterized by the rise in mammals & the origins of apes & during this time mammals began to get larger

Question 24

Which period did the continenets begin to apporach their current positions

Answer 24

Paleogene Period

Question 25

What 2 things happened in the Neogene Period

Answer 25

Global Climates began to cool

Mammals & birds began to evolve into modern forms