Earth lore

Question 1

What are the Eons of Earth, In Order

Answer 1

Hadean (4.6-4BYA), Archaean(4-2.5BYA), Proterozoic(2.5Bya-542MYA), Phanerozoic(542MYA- Present)

Question 2

what are the Eras of the Phanerozoic Eon?

Answer 2

Paleozoic, Mesozoic, and Cenozoic

Question 3

Periods within the Paleozoic?

Answer 3

Cambrian (542-488 mya), Ordovician (488-434 MYA), Silurian (434-416 MYA), Devonian (416-354 MYA) , carboniferous (354-299 MYA), Permian (299-251 MYA)

Question 4

Periods of the Mesozoic?

Answer 4

Triassic(251-200 MYA), Jurassic (200-145.5 MYA), and Cretaceous (145.5-65.5 MYA)

Question 5

periods of the Cenozoic?

Answer 5

tertiary (65.5-2.6 MYA), Quaternary (2.5 MYA-now)

Question 6

The oldest fossil was from

Answer 6

Early Archaean 3.8 BYA

Question 7

The oldest chemical evidence is

Answer 7

3.6 BYA from the Archaean eon

Question 8

When did Earth’s oceans form?

Answer 8

4.4 BYA during the Hadean Eon when Water vapor was being released by volcanic activity

Question 9

When did oxygen begin to accumulate in the earth atmosphere

Answer 9

1.5 BYA after all the iron in the ocean had reacted with the oxygen

Question 10

When did the first animals appear

Answer 10

700 million years ago during the Cryogenian period in the Neoproterozoic era

Question 11

When did bony fish appear

Answer 11

During the Silurian 410 million years ago

Question 12

When did the first Mycorrhizal fungi appear

Answer 12

During the Ordovician

Question 13

When did the first tree plants appear

Answer 13

400 MYA during the Devonian

Question 14

When did insects appear

Answer 14

400 million years ago in the Devonian

Question 15

First Cartilaginous fish appeared

Answer 15

450 MYA During the Ordovician

Question 16

The first amniotes appeared d

Answer 16

318 MYA in the Carboniferous

Question 17

When did Mammals appear

Answer 17

178 MYA in the Triassic

Question 18

When did reptiles appear

Answer 18

315 MYA in carboniferous

Question 19

When did birds appear

Answer 19

100 MYA during the jurassic

Question 20

K-T extinction

Answer 20

bye dinosaurs

Question 21

When did cnidarians appear

Answer 21

580 MYA during the Ediacaran

Question 22

When did angiosperms first appear

Answer 22

145 MYA during the cretaceous

Question 23

When did Bryophytes first appear

Answer 23

450 MYA during the Ordovician

Question 24

When did Humans appear

Answer 24

2 MYA in the early quaternary