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  1. How deep is the ocean? - NOAA's National Ocean Service

    The deepest part of the ocean is called the Challenger Deep and is located beneath the western Pacific Ocean in the southern end of the Mariana Trench, which runs several hundred kilometers southwest …

  2. How does pressure change with ocean depth?

    Jun 16, 2024 · This vehicle allows scientists to observe the deep sea under tremendous ocean pressure. At sea level, the air that surrounds us presses down on our bodies at 14.7 pounds per square inch. …

  3. 5 Ocean Terms You May Not Know — But Should!

    The ocean is made up of five “zones.” The hadalpelagic zone, commonly known as the hadal zone, is the deepest part of the ocean, with depths ranging from approximately 6,096 meters to 10,973 …

  4. What is a thermocline? - NOAA's National Ocean Service

    In the ocean, the depth and strength of the thermocline vary from season to season and year to year. It is semi-permanent in the tropics, variable in temperate regions (often deepest during the summer), …

  5. What is the largest ocean basin on Earth?

    Jun 16, 2024 · The Pacific Ocean is the largest and deepest of the world ocean basins. The 'Ring of Fire' is defined by a nearly continuous series of oceanic trenches, island arcs, and volcanic mountain …

  6. Why does the ocean get colder at depth?

    Jun 16, 2024 · Cold, salty water is dense and sinks to the bottom of the ocean while warm water is less dense and remains on the surface. Cold water has a higher density than warm water. Water gets …

  7. How far does light travel in the ocean?

    Light may be detected as far as 1,000 meters down in the ocean, but there is rarely any significant light beyond 200 meters. The ocean is divided into three zones based on depth and light level.

  8. What is the intertidal zone? - NOAA's National Ocean Service

    Jun 16, 2024 · Intertidal zones exist anywhere the ocean meets the land, from steep, rocky ledges to long, sloping sandy beaches and mudflats that can extend for hundreds of meters.

  9. Tides and Water Levels - NOAA's National Ocean Service

    Tides originate in the oceans and progress toward the coastlines where they appear as the regular rise and fall of the sea surface. When the highest part, or crest of the wave reaches a particular location, …

  10. What is the world's smallest ocean?

    Jun 16, 2024 · The average depth of the Arctic Ocean is 3,953 feet and it is 18,264 feet at its deepest point. The Arctic Ocean is almost completely covered with ice for the majority of the year and its …