The 4 Eras

Question 1

What are the 4 geographic eras?

Answer 1

1. Paleozoic
2. Precambrian
3. Cenozoic
4. Mesozoic

Question 2

Which era is the longest?

Answer 2

precambrian (87% of Earth’s history)

Question 3

Which era had dinosaurs? ROAR!!

Answer 3

Mesozoic

Question 4

Which era is the shortest?

Answer 4

Ceonozoic

Question 5

Which era first saw fish and amphibians?

Answer 5

Paleozoic

Question 6

In which ear did human beings develop?

Answer 6

Cenozoic

Question 7

What is the “Ring of Fire”?

Answer 7

The highest distribution of volcanic and earthquake activity caused by shifting of tectonic plates.

Question 8

Contienents took shape in which era?

Answer 8

paleozoic

Question 9

How old is the earth?

Answer 9

4.6 billion years

Question 10

What major biological events that occurred during the Paleozoic era?

Answer 10

Life forms began to evolve

Question 11

What giant landform region was formed in the Precambrian era?

Answer 11

Pangea

Question 12

In which era did ice sheets cover the earth?

Answer 12

Cenozoic

Question 13

When was the Paleozoic era and how long did it last?

Answer 13

570 million years ago to 245 million years ago (lasted 289 m yrs)

Question 14

What is the Paleozoic era often called?

Answer 14

The age of invertebrates

Question 15

What was the climate of the Paleozic era?

Answer 15

Same as today with some hot spots

Question 16

What caused the mass extinctions during the Paleozoic era?

Answer 16

• climate change

- volcanic eruptions