Introduction - 1 Flashcards
1
Q
How much of the ocean bottom has been mapped?
A
Less than 2%
2
Q
What is oceanic crust made from?
A
Basalt
3
Q
What is continental crust made from?
A
Granite
4
Q
What is the density of oceanic crust?
A
2.9 gcm-3
5
Q
What is the density of continental crust?
A
2.7 gcm-3
6
Q
What % of the earth’s surface is covered with oceans?
A
71%
7
Q
What % of the earths surface does the Pacific cover?
A
31%
8
Q
What % of the earths surface does the Atlantic cover?
A
16%
9
Q
What % of the earths surface does the Indian Ocean cover?
A
14%
10
Q
What % of the earths surface does the Arctic ocean cover?
A
3%
