Time Scale

Question 1

Cenozoic (youngest to oldest)

Answer 1

Quaternary, Neogene, Paleogene

Question 2

Mesozoic (youngest to oldest)

Answer 2

Cretaceous, Jurassic, Triassic

Question 3

Paleozoic (youngest to oldest)

Answer 3

Permian, Carboniferous, Devonian, Silurian, Ordovician, Cambrian

Question 4

When was Cambrian explosion (in years)

Answer 4

540 million years ago

Question 5

When did first life happen? (In years)

Answer 5

3.7 billion years ago

Question 6

How old is the earth

Answer 6

4.6 billion years old

Question 7

How long ago did the Paleozoic era end

Answer 7

250 million years ago

Question 8

How long ago did the Mesozoic era end

Answer 8

65 million years ago

Question 9

When did the Anthropocene start

Answer 9

10 thousand years ago

Question 10

Camels often sit down carefully. Perhaps their joints creak? Perhaps not

Answer 10

Cambrian Ordovician Silurian Devonian Carboniferous Permian Triassic Jurassic Cretaceous Paleogene Neogene.

Question 11

Name all the Paleozoic eras

Answer 11

Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian