OCNG 251 Exam 1 UPDATED ACTUAL
Questions and CORRECT Answers
Oceans cover... - CORRECT ANSWER- ✔✔70.8% of Earth's surface
4 Principal Oceans (plus 1) - CORRECT ANSWER- ✔✔- Pacific Ocean
- Atlantic Ocean
- Indian Ocean
- Arctic Ocean
- (the plus 1) Southern Ocean
Or "Antarctic Ocean"
Pacific Ocean - CORRECT ANSWER- ✔✔- Largest ocean, covers over a third of Earth's
surface
- Deepest Ocean - average depth: 3940 meters
- Contains the deepest point in all oceans - 11,022 meters (6.85 miles) in the Mariana Trench
Atlantic Ocean - CORRECT ANSWER- ✔✔- Second largest ocean
- Half the size of the Pacific Ocean
- Average depth: 3844 meters
Indian Ocean - CORRECT ANSWER- ✔✔- Mainly located in the Southern Hemisphere (i.e.
south of the Equator or 0o latitude)
- Slightly smaller than Atlantic Ocean but around same average depth (3840 meters)
Arctic Ocean - CORRECT ANSWER- ✔✔- Small - 7% size of Pacific
- Shallow - about a quarter as deep as the other oceans (average depth 1,117 meters)
- Permanent layer of sea ice at surface (few meters thick)
(+1) Southern Ocean - CORRECT ANSWER- ✔✔- Defined by meeting of currents near
Antarctica called the Antarctic Convergence
, - Actually parts of Pacific, Atlantic, and Indian Oceans south of 50o South Latitude
Seas - CORRECT ANSWER- ✔✔- Smaller and shallower than oceans
- Salt water
- Directly connected to world ocean
- Usually enclosed by land
-- Sargasso Sea defined by surrounding ocean currents
The Modern Seven Seas - CORRECT ANSWER- ✔✔North and South Pacific, North and
South Atlantic, Indian, Arctic, Antarctic
Pacific Navigators - CORRECT ANSWER- ✔✔- The peopling of the Pacific Islands required
extensive travel in open boats and exceptional navigation skills.
- It was difficult because islands are widely scattered.
Early History of Ocean Exploration - CORRECT ANSWER- ✔✔boat technology developed
40,000 years ago, likely for food and trade
European Navigators - CORRECT ANSWER- ✔✔Phoenecians, Greek Pytheas, Eratosthenes
Phoenecians - CORRECT ANSWER- ✔✔- first from Western Hemisphere to develop
navigation arts
- Navigated circa 2000 B.C.
- Explored Mediterranean Sea, Red Sea, and Indian Ocean
- First circumnavigation of Africa
- Reached the British Isles
Greek Pytheas - CORRECT ANSWER- ✔✔- Sailed northward using a simple method to
determine latitude in 325 B.C.
- Navigated using the North Star
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 MGRADES. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.49. You're not tied to anything after your purchase.
