Geologic Eras

Question 1

What are the four eras?

Answer 1

Precambrian, Paleozoic, Mesozoic, Cenozoic.

Question 2

What landforms and life forms were made during the Cenozoic era?

Answer 2

Western Cordillera, Great Lakes. Mammals and humans.

Question 3

What landforms and life forms were made during the Mesozoic era?

Answer 3

Intuition mountains, Western Cordillera. Mammals and dinosaurs.

Question 4

Oldest era?

Answer 4

Precambrian

Question 5

What landforms and life forms were made during the Paleozoic era?

Answer 5

Appalachian mountains, shallow seas. Insects, fish and amphibians.

Question 6

What landforms and life forms were made during the Precambrian era?

Answer 6

Canadian Shield, Brazilian Shield, African Shield, Australian Shield. Bacteria/algae and jelly fish.

Question 7

What years were the eras made in?

Answer 7

Precambrian- 4.6 billion years
Paleozoic- 570 million years
Mesozoic- 245 million years
Cenozoic- 66 million years