Lectures 1-4

Question 1

Oceans cover ___ of the earths surface

Answer 1

70.8%

Question 2

Oceans makes up ___ of earths volume

Answer 2

1.3x10^-3

Question 3

Why was the age of exploration important to the history of Ocean Science?

Answer 3

• It was the first time the global oceans were mapped.
• It was the first time the globe was circumnavigated.

Question 5

What can a CTD Rosette be used for?

Answer 5

• Collecting water from a certain depth
• Measuring salinity of the water
• Measuring the pressure of the water

Question 5

How deep is the deepest part of the ocean?

Answer 5

10.898 km

Question 6

How high is the highest point on Earth above sea level?

Answer 6

8.848 km

Question 7

What zones of the ocean can light be present?

Answer 7

• Mesopelagic
• Epipelagic

Question 8

Fresh water that warms fro -1 degree C to +1 degree C will change state from ____ to ____ and its density will _____.

Answer 8

Ice, water, increase

Question 8

Which two features would you find the Continental Rise between?

Answer 8

Continental Slope and Abyssal Plain

Question 9

What is the longest continuous mountain range on earth?

Answer 9

The Mid-Ocean Ridge

Question 10

What are the layers of the Earth in order from most to least dense?

Answer 10

Inner Core, Outer Core, Mantle, Crust

Question 11

What are the layers of the Earth in order from coldest to hottest?

Answer 11

Crust, Mantle, Outer Core, Inner Core

Question 12

What are the observations that were addressed by Wegener’s Continental Drift Hypothesis?

Answer 12

• The same fossils can be found in Australia and South Africa
• The continents on either side of an ocean basin match like a jigsaw

Question 13

What observations can be explained by the Theory of Plate Tectonics?

Answer 13

• Continental pates move slowly over time
• The youngest rocks on the seafloor are found at mid-ocean ridges and hotspot seamounts
• The oldest seafloor is much younger than the Earth

Question 14

The deepest earthquakes are found at ______.

Answer 14

Subduction Zones

Question 15

The east coast of North America is a _____ margin while the east coast of Japan is a _____ margin.

Answer 15

Passive, Active

Question 16

What type of heat transfer is responsible for Earth’s magnetic field?

Answer 16

Convective

Question 17

Who was the first person to draw a bathymetric map of the global ocean floor from sonar data?

Answer 17

Marie Tharp

Question 18

Density equation

Answer 18

Mass/Volume

Question 19

New ocean crust is formed at _______ plate boundaries.

Answer 19

Divergent

Question 20

A seamount that forms in the middle of the abyssal plain, away from continents or the mid-ocean ridge, is probably caused by a _____.

Answer 20

Hotspot

Question 21

_____ crust is thinner and denser than _______ crust.

Answer 21

Oceanic, continental

Question 22

We would expect to find an ocean trench at an ________ margin and a continental rise at a ________ margin.

Answer 22

Active continental, passive continental