Podcast
Questions and Answers
What percentage of the Earth's surface is covered by oceans and seas?
What percentage of the Earth's surface is covered by oceans and seas?
- 90%
- 50%
- 60%
- 70% (correct)
Which of the following best describes the average depth of oceans?
Which of the following best describes the average depth of oceans?
- About 1,500 meters
- Around 3,700 meters (correct)
- Around 500 meters
- Less than 1,000 meters
Which ocean occupies approximately 45% of the surface area of all oceans?
Which ocean occupies approximately 45% of the surface area of all oceans?
- Pacific Ocean (correct)
- Indian Ocean
- Arctic Ocean
- Atlantic Ocean
How does the biodiversity of oceans compare to that of seas?
How does the biodiversity of oceans compare to that of seas?
What is the general depth limit for seas compared to oceans?
What is the general depth limit for seas compared to oceans?
Which is NOT a characteristic of seas?
Which is NOT a characteristic of seas?
What contributes significantly to the world's climate through its critical environmental functions?
What contributes significantly to the world's climate through its critical environmental functions?
What is the total area covered by the Pacific Ocean?
What is the total area covered by the Pacific Ocean?
Flashcards
Ocean vs. Sea
Ocean vs. Sea
Oceans are the largest saltwater bodies, deeper, and have more diverse marine life than seas, which are smaller saltwater bodies partially or completely surrounded by land..
Pacific Ocean Size
Pacific Ocean Size
The Pacific Ocean is the largest ocean, covering approximately 45% of Earth’s total ocean area.
Ocean Depth
Ocean Depth
Oceans generally have an average depth greater than 3,700 meters (12,000 feet).
Sea Depth
Sea Depth
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Pacific Ocean Location
Pacific Ocean Location
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Ocean Importance
Ocean Importance
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Ocean Food Source
Ocean Food Source
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Ocean Threats
Ocean Threats
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Study Notes
Oceans and Seas
- Oceans and seas cover over 70% of Earth's surface and hold 97% of the planet's water
- Essential for the planet's climate and ecosystems
- Crucial for the planet's overall health
Ocean Characteristics
- Oceans are the largest bodies of saltwater on Earth
- Average depth of around 3,700 meters (12,000 feet)
- Contain a greater variety of marine life than seas
Sea Characteristics
- Smaller bodies of saltwater found within or near oceans
- Average depth is less than 1,000 meters (3,300 feet)
- Support fewer types of marine life compared to oceans
Ocean Distribution
- Earth's water is divided into five major oceans: Pacific, Atlantic, Indian, Southern, and Arctic
- Each ocean has specific characteristics regarding size, location, depth, and salinity
Pacific Ocean
- Largest ocean, covering about 45% of the total ocean area
- Spans 165 million km²
- Bounded by North and South America, East Asia, Australia, and the Southern Ocean
- Contains various islands, from tiny atolls to larger landmasses like Japan and New Zealand
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