Continental Margins

Question 1

continental Margins

Answer 1

-Submerged edge of a continent
-continental lithosphere

Question 2

Features of a Continental Margin

Answer 2

-shelf, self break, rise

Question 3

shelf

Answer 3

submerged continent; sedimentary rock, petroleum

Question 4

shelf break

Answer 4

slopes down; shelf slope
darker blue; steep area off shore

Question 5

rise

Answer 5

edge of the slope, absent in active margins

Question 6

submarine canyons

Answer 6

deep gullies cut into shelf and slope

Question 7

Abyssal Plain

Answer 7

Oceanic lithosphere (depth of oceans)
flattest valley on earth
full of clay
volcanic peaks

Question 8

Hypsometric curve

Answer 8

above sea level, below sea level diagram

Question 9

what percentage of the earth is below sea level

Answer 9

70%

Question 10

Average ocean depth

Answer 10

-3800m

Question 11

continental margins

Answer 11

Passive and Active

Question 12

passive margin

Answer 12

not tectonic boundary (no trench), lots of sediment
low slopes
volcanoes

Question 13

Active Margin

Answer 13

mountains
ocean trench
continental slope
volcanoes

Question 14

examples of active

Answer 14

WA, OR, CA

Question 15

which ocean has the thickest layer of sediments

Answer 15

atlantic

Question 16

pacific vs atlantic

Answer 16

pacific
- less sediments
- greater area
- trenches
Atlantic
- more sediment
- smaller area
- passive margins- rivers

Question 17

mid ocean ridge

Answer 17

divergent boundary where two plates are moving apart, with new crust forming from magma upwelling

Question 18

seamounts

Answer 18

volcanic peak

Question 19

mariana trench

Answer 19

36,000 ft- life at the depth of the sea. closest ever gotten by man was 35,800ft

Question 20

on top if rifts

Answer 20

hydrothermal vents (geysers)