TeXes Science Practice Test

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The average ocean depth on Earth is approximately how many meters?

2000 meters
4000 meters
6000 meters
8000 meters

The correct answer is: 4000 meters

The average ocean depth on Earth is approximately 4000 meters. This figure represents the mean depth of the world’s oceans, which covers around 71% of the planet's surface. The profound depths of the ocean can vary considerably in different regions due to geological formations, but when averaged globally, the depth is taken to be around 4000 meters. This depth is significant because it influences oceanic pressure, temperature, and biodiversity. Understanding this average is crucial for various fields, including marine biology, oceanography, and environmental science, as it helps to contextualize the habitat availability for marine organisms and the impact of human activities on ocean ecosystems.