Physical Geography Test #1

Question 1

What is Geologic time

Answer 1

History of the earth from its formation to the present that has been divided into major time periods

Question 2

What is the age of the earth

Answer 2

4.543 billion years old

Question 3

What are the four layers of the earth

Answer 3

Crust, mantle, outer core, inner core

Question 4

What is the thickness of the earths crust

Answer 4

35-70km thick

Question 5

What is the thickness of the mantle of the earth

Answer 5

2900km thick

Question 6

What is the thickness of the inner core

Answer 6

1200 km thick

Question 7

What is the outer core

Answer 7

2300 km thick

Question 8

What are the four eras in order from oldest to current

Answer 8

Precambrian, Mesozoic, Paleozoic, Cenozoic

Question 9

How long did the precambrian era last and what percent of the years history

Answer 9

4 billion years and 87% of the earth’s history

Question 10

What life started in the Precambrian era?

Answer 10

Multi-celled organisms

Question 11

What era did the Canadian Shield form

Answer 11

Precambrian era

Question 12

How long did the Palaeozoic era last and what percent of the earths history is it

Answer 12

325 million years and 7%

Question 13

What era was it when large parts of North America were covered in shallow seas

Answer 13

Paleozoic

Question 14

What life developed in the Palaeozoic era

Answer 14

Fish, amphibians, land plants, and insects

Question 15

What era did the Appalachian mountains form

Answer 15

Palaeozoic era

Question 16

How long did the Mesozoic era last and what percent of the earths history was it

Answer 16

180 million years and 4%

Question 17

What era did Pangea break up in

Answer 17

Mesozoic

Question 18

What era did the Rocky Mountains begin forming in

Answer 18

Mesozoic

Question 19

What life formed in the Mesozoic era

Answer 19

Birds and mammals

Question 20

What era ended with a mass extinction + what went extinct

Answer 20

Mesozoic era with the dinosaur extinction

Question 21

What is the current era

Answer 21

Cenozoic era

Question 22

How long ago did the Cenozoic era start

Answer 22

66 million years ago

Question 23

What era was the most recent ice age in

Answer 23

Cenozoic era

Question 24

What era did the uplifting of the coastal mountains happen in

Answer 24

Cenozoic era

Question 25

What era means “middle of life”

Answer 25

Mesozoic era

Question 26

What era means “earliest life”

Answer 26

Precambrian era

Question 27

What are three types of rock

Answer 27

Igneous rock, sedimentary rock, metamorphic rock

Question 28

Who was Alfred Wegenier

Answer 28

A German scientist who first developed the theory of Pangea

Question 29

What was Pangea and what era did it break apart

Answer 29

Pangea was a super continent that broke apart in the Mesozoic era