Lectures 1-4 Flashcards
Oceans cover ___ of the earths surface
70.8%
Oceans makes up ___ of earths volume
1.3x10^-3
Why was the age of exploration important to the history of Ocean Science?
- It was the first time the global oceans were mapped.
- It was the first time the globe was circumnavigated.
What can a CTD Rosette be used for?
- Collecting water from a certain depth
- Measuring salinity of the water
- Measuring the pressure of the water
How deep is the deepest part of the ocean?
10.898 km
How high is the highest point on Earth above sea level?
8.848 km
What zones of the ocean can light be present?
- Mesopelagic
- Epipelagic
Fresh water that warms fro -1 degree C to +1 degree C will change state from ____ to ____ and its density will _____.
Ice, water, increase
Which two features would you find the Continental Rise between?
Continental Slope and Abyssal Plain
What is the longest continuous mountain range on earth?
The Mid-Ocean Ridge
What are the layers of the Earth in order from most to least dense?
Inner Core, Outer Core, Mantle, Crust
What are the layers of the Earth in order from coldest to hottest?
Crust, Mantle, Outer Core, Inner Core
What are the observations that were addressed by Wegener’s Continental Drift Hypothesis?
- The same fossils can be found in Australia and South Africa
- The continents on either side of an ocean basin match like a jigsaw
What observations can be explained by the Theory of Plate Tectonics?
- 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
The deepest earthquakes are found at ______.
Subduction Zones
The east coast of North America is a _____ margin while the east coast of Japan is a _____ margin.
Passive, Active
What type of heat transfer is responsible for Earth’s magnetic field?
Convective
Who was the first person to draw a bathymetric map of the global ocean floor from sonar data?
Marie Tharp
Density equation
Mass/Volume
New ocean crust is formed at _______ plate boundaries.
Divergent
A seamount that forms in the middle of the abyssal plain, away from continents or the mid-ocean ridge, is probably caused by a _____.
Hotspot
_____ crust is thinner and denser than _______ crust.
Oceanic, continental
We would expect to find an ocean trench at an ________ margin and a continental rise at a ________ margin.
Active continental, passive continental
