Geological timeline

Question 1

How old is Earth?

Answer 1

4.6 billion years ago

Question 2

What is the time of Hadean, Archean, Proterozoic called?

Answer 2

Precambrian

Question 3

What is carbon essential for?

Answer 3

Carbon is essential for life on Earth

Question 4

In what eon did fishes develop teeth and jaws?

Answer 4

In the phanerozoic eon

Question 5

The Cretaceous- Paleogene Extinction Event happened at the end of which era?

Answer 5

At the end of Mesozoic era

Question 6

What does the Pro in Proterozoic mean? and what does it mean

Answer 6

Pro means before. and it means Early life.

Question 7

What does Paleozoic mean?

Answer 7

Old life

Question 8

What does Mesozoic mean ?

Answer 8

Middle life

Question 9

What does Cenozoic mean?

Answer 9

New life

Question 10

At the end of which era did the Great Dying occur?

Answer 10

At the end of the Paleozoic era

Question 11

What does Phanerozoic mean?

Answer 11

Visible life

Question 12

What is the Great Dying?

Answer 12

The time in which most animals disappeared

Question 13

It took how many years for the Earth to recover after the Great Dying

Answer 13

It took 1 million years for life to recover

Question 14

How long ago was the Hadean eon?

Answer 14

4.6 - 4 billion years ago

Question 15

How long ago was the Archean eon?

Answer 15

2.5-4 billion years ago

Question 16

How long ago was the Proterozoic eon?

Answer 16

541 million- 2.5 billion years ago

Question 17

How long ago was the Paleozoic era?

Answer 17

252 million years ago

Question 18

How long ago was the Mesozoic era?

Answer 18

252 million- 66 million

Question 19

How long ago was the Cenozoic era?

Answer 19

66 million - present

Question 20

What significant thing happened in the Mesozoic era?

Answer 20

The time that organisms appeared on Earth after The Great Dying

Question 21

At the Hadean eon, how was Earth?

Answer 21

Earth was a giant fire ball and the moon is forming