Exam (elaborations)
Marine Science Exam 1 with correct Answers
- Course
- Institution
Marine Science Exam 1 with correct Answers
[Show more]
Content preview
Marine Science Exam 1 with correctAnswers
How did early civilizations use the oceans? - Answer -food, trade, transportation
Why explore oceans in Middle Ages/ Age of Exploration? - Answer -exploration, trade,
colonization
Focus of early oceanography in 19th/early 20th centuries? - Answer -Science and
engineering
What do you think of when you hear "modern oceanography?" - Answer -private
institutions (Scripps Institute of Oceanography), WWII expansion for military, science
WWII to now
The age of the Earth + How know? - Answer -4.5-4.6 billion years + Radiometric dating
with isotopes
What are hypotheses for where the oceans' water came from? - Answer -Volcanic
activity, Present when Earth formed, asteroids or comets
Cause of Earth's seasons? - Answer -Tilt and revolution around sun
One nautical mile is equal to - Answer -One minute of latitude
What are the reservoirs of water, from largest to smallest? (5) - Answer -Oceans > ice
caps + glaciers > groundwater > lakes + rivers > atmosphere
One degree equals # latitude? - Answer -60 minutes latitude
One knot equals - Answer -1.15 mph (statute miles/hr) or 1 nautical mile per hour
flux definition - Answer -flow between reservoirs
2nd largest reservoir - Answer -ice caps and glaciers
approx residence time of the oceans' water - Answer -3,000 years
, residence time definition + equation - Answer -avg length of time a water molecule
spends in a reservoir; volume (km^3)/inflow or outflow (km^3/yr)
Hemisphere with more ocean - Answer -Southern
Approx avg depth of oceans - Answer -3,800 m
Is Everest the tallest mountain on Earth from base to summit? - Answer -No- it's Mauna
Kea (Hawaii)
What increases moving from surface to center of Earth? - Answer -Pressure, density,
temperature
Ocean names (5) - Answer -Pacific, Atlantic, Indian, Southern, Arctic
Earth's layers based on geologic properties (4) - Answer -crust, mantle, outer core,
inner core
Earth's layers based on physical properties (5) - Answer -lithosphere, asthenosphere,
mesosphere, outer core, inner core
ductile layer of earth - Answer -asthenosphere/ mantle
Oceanic vs Continental Crust - Answer -Ocean is thinner, denser, younger
term for lithosphere resting on asthenosphere - Answer -isostasy
Continental Drift Evidence (4) + Guy - Answer -Alfred Wegener
1. Puzzle fit of continents.
2. Fossil distribution on different continents.
3. Matching glacial deposits across continents
4. Matching mtn belts/ rock units across continents
Sea Floor Spreading Evidence (5) - Answer -1. Earthquake distributions (shallow at
crust movement, deep at subduction)
2. Heat flow on the sea floor (highest at ridges, lowest at trenches)
3. Oldest continental crust is only 200 million years old (destroyed at subduction zones
in continental trenches) vs continental is billions of years old
4. Sediments get older and thicker the farther away they are from the mid-ocean ridges
5. Earth's changing magnetic field over time (recorded in the oceanic crust as minerals
crystalize
What drives sea-floor spreading? - Answer -Mantle convection cells
plate tectonics = - Answer -sea floor spreading + continental drift
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller millyphilip. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75632 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now