Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Marine > ChLapter 2 > Flashcards

ChLapter 2 Flashcards

(49 cards)

Start Studying
1
Q

How much water is covering the Southern Hemisphere

A

80%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Four large basins

A

Pacific, Atlantic, Indian, arctic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the deepest and oldest basin

A

Pacific

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Evolutionary Scientist believed the earth was created

A

4.5 billion years ago

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Big Bang

A

Theory not fact

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What allows water to stay liquid

A

Earth distance from sun

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Core

A

Innermost layer solid inner core liquids outer core. Iron rich

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Mantle

A

Middle layer semi plastic composition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Crust

A

Outermost layer thinning portion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Oceanic crust

A

Made up of dark colored mineral, basalt, enter than continental

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Continental crust

A

Light colored granite construction mainly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Oceanic crust

A 
3.0 g/cm density
Only about 5 lm or 3 miles thick 
Geologically young
Dark in color
Rich in iron and magnesium
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Continental crust

A 
2.7 g/cm density
20 to 50 km or 12 to 30 ,lies thick
Can be very old 
Light in color
Rich in sodium, potassium, calcium, and alimunim
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Alfred wegner

A

Proper 1912 the continental drift

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

When did wegner propose Pangea started breaking

A

180 million years ago

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Why wasn’t the continental drift accepted at the time

A

Wegner couldn’t explain how

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What explains the how in we genres theory

A

Plate tectonics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Main features of plate tectonics

A

Earth surface covered by a series of crustal plates
Ocean floors are constantly moving spreading in center sinking in edges
Convection assist movement
Heat from mantle drives these currents

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Mid oceanic ridges

A

Rise from ocean floor

A chin of submarine volcanic mountains

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Transform faults

Study These Flashcards
A

When a ridge is dispalced

21
Q

Sediment

Study These Flashcards
A

Thicker away from ridges

22
Q

Geomagnetic anomalies

Study These Flashcards
A

When magnetic field reverses

23
Q

When does new rock form

Study These Flashcards
A

Magma re cools

24
Q

Island arcs

Study These Flashcards
A

Chains of islands found in ocean generally pacific

25
Where are island arcs usually located
Deep trenches on the continental side of them
26
Pangea wa surrounded by a single world ocean
Panthalassa
27
What sea separated Eurasia from Africa
The Tethys sea
28
Hen where they in place
200 million years ago
29
Hat began forming about 180 millions years ago
A rift between neith America and the combined continents of South America/ Africa
30
What two large continents were formed from the ridge
Laurasia and Gondwana
31
The ridge was the beginning of
The mid Atlantic ridge
32
About 135 million years ago what began to form
A rift between South America and Africa
33
The mid ocean ridge and north Atalantic formed
Mid Atalantic
34
As the Atlantic Ocean grew the Americas were carried farther from
Eurasia and Africa
35
Lithogenus sediment
Derived from the break down of rocks weathering
36
Bio genus
Derived from the skeletons no shells of marine organism
37
Bio genus sediment
Composed of microfossils can reveal information from past
38
Ow can ocean temperature be determined from microfossils
By looking at the ratios of magnesium to calcium or by different ratios of oxygen isotopes
39
What are the margins of continues
Boundaries between continental and oceanic crust
40
Consist of
Continental shelf Continental slope Onto natal rise
41
Continental shelf
8% of oceans surface area
42
What is richest part of ocean
Continental shelf
43
What van be thought of as the edge
Continental slope
44
Continental slope is the
Steepest
45
How is the continental rise formed
Sediments that have been pushed down from the continental shelf
46
Underwater river delta
Continental rise
47
Passive margins
Relatively inactive geologically Flat, coastal plains, wide continental shelves an dgradually sloping continental,slopes East coast of us
48
Active margins
Sites of more intense geologic activity including earthquakes , volcNoes and trenches Steep, rocky shorelines narrow continual shelves
49
How much water covers the northern hemisphere
61%

Marine (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions