100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Oceanography Exam 1 Study Guide || with 100% Error-free Solutions. $11.59   Add to cart

Exam (elaborations)

Oceanography Exam 1 Study Guide || with 100% Error-free Solutions.

 9 views  0 purchase
  • Course
  • Oceanography 1 Study
  • Institution
  • Oceanography 1 Study

What does plate tectonics refer to? correct answers It is a theory explaining the movement of the Earth's crust -Earth's crust is not solid but rather a bunch of pieces (or 'plates') that move on the surface of the Earth. Similar to cracked egg shell. We need all three boundary types for plates...

[Show more]

Preview 2 out of 12  pages

  • August 18, 2024
  • 12
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Oceanography 1 Study
  • Oceanography 1 Study
avatar-seller
FullyFocus
Oceanography Exam 1 Study Guide || with 100% Error-free
Solutions.
What does plate tectonics refer to? correct answers It is a theory explaining the movement of the
Earth's crust
-Earth's crust is not solid but rather a bunch of pieces (or 'plates') that move on the surface of the
Earth. Similar to cracked egg shell.

We need all three boundary types for plates to move around Earth's surface:
-Convection currents -- drives the movement
-Mid-ocean ridge -- spreading center
Subduction zones -- oceanic trench site of crust destruction

What is the major evidence for plate tectonics? correct answers -Fit -- Shape of continents - they
fit like puzzle pieces
-Mountain ranges (Appalachian mountains)
-Glacial Deposits
-Fossils

What are the different boundary types? correct answers Divergent plate boundaries, convergent
plate boundaries, transform plate boundaries

Divergent Plate Boundaries correct answers Boundaries between plates moving apart
--Divergent ocean crust (Mid-Atlantic ridge)
--Divergent continental crust (The Rift Valley of East Africa)

Divergent boundaries results in seafloor spreading
Mid ocean ridges
--Deep trenches at continental margins
--Seafloor volcanoes with flat tops

As you move away from the divergent boundary, the rock crust gets older

Convergent Plate Boundaries correct answers Regions where plates are pushing together

Compression produces buckling and shortening

Ocean crust destroyed - subduction zone volcanoes - ring of fire
-Ocean trench formed
-Volcanic ash formed

Three types of convergent boundary
1. Ocean-continent
2. Ocean-Ocean
3. Continent-Continent

, Transform Plate Boundaries correct answers Transform faults form because axis of seafloor
spreading on a sphere

Example: San Andreas Fault

Sea floor is not created or destroyed + no volcanoes formed

What types of tectonic activity happens at plate boundaries? What about at non-plate
boundaries? correct answers At plate boundaries:
-You will always find earth
-Volcanoes at plate boundaries where subduction happens (ocean-ocean and ocean-continent
convergent boundaries &
Mountains and island chains forming
-Tectonics form ocean basins at major plate boundaries.

Non plate boundaries:
-Mantle plumes will come up from the center of the earth and bust up though the plate and cause
a volcano. You end up with an island chain forming such as Hawaii and hot spots happen
-There are volcanic islands within a plate and island chains
-Record ancient plate motions

How is oceanic crust different from continental crust? correct answers -Continental crust is thick
and relatively light. It is made of granite and lightly colored. Its predominant elements are silica,
oxygen, and aluminum
-Oceanic crust is not as thick but it is dense. It is made of basalt and is dark colored. Its
predominant elements are iron, oxygen, and magnesium

What is salinity? correct answers It is the total amount of solid material dissolved in water
-Ratio of mass of dissolved substances to the mass of the water sample
-Does not include fine particles in suspension (e.g. rocks and dirt)
Expressed as parts per thousand (ppt): %

Why is the ocean salty? correct answers -Rain dissolves rocks
-That dissolution creates 'salts' (salt is not just NaCl) that are dissolved in water
-Process is called weathering

Why is global circulation important? correct answers -It transports about 20% of latitudinal heat
-- Equator to poles
-Transport, carbon, nutrients, and organisms
-Influences weather & climate
-Influences commerce

How do pressure gradients impact wind movement? correct answers -Wind always flows from
high to low pressure along Earth's surface

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 FullyFocus. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $11.59. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

80461 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$11.59
  • (0)
  Add to cart