Readers ask: How Do Oceanic Ridges Differ From Continental Mountain Ranges?

What happens at an oceanic ridge?

Mid- ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth’s tectonic plates spread apart. As the plates separate, molten rock rises to the seafloor, producing enormous volcanic eruptions of basalt.

What are the three 3 major topographic provinces of the ocean floor?

three distinct provinces:

  • continental margins.
  • deep ocean basins.
  • mid- ocean ridges.

What is the oceanic ridge system quizlet?

A mid- ocean ridge or mid- oceanic ridge is an underwater mountain range, formed by plate tectonics. This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.

What is the oceanic ridge system?

Oceanic ridge, continuous submarine mountain chain extending approximately 80,000 km (50,000 miles) through all the world’s oceans. Collectively, the oceanic ridge system is the most prominent feature on Earth’s surface after the continents and the ocean basins themselves.

You might be interested:  Where Does Mountain Time Begin?

Which is the largest mid oceanic ridge of the earth?

The Mid-Atlantic Ridge ( MAR ) is a mid-ocean ridge, a divergent or constructive plate boundary located along the floor of the Atlantic Ocean, and part of the longest mountain range in the world.

What is crest of Mid Oceanic Ridge?

A mid-ocean ridge (MOR) is a seafloor mountain system formed by plate tectonics. This feature is where seafloor spreading takes place along a divergent plate boundary. The rate of seafloor spreading determines the morphology of the crest of the mid-ocean ridge and its width in an ocean basin.

What are three major features of a passive continental margin?

The Atlantic and Gulf coasts show the classic form of a passive continental margin: a low-lying coastal plain, broad continental shelf, then a steep continental slope, gentle continental rise, and flat abyssal plain. This topography is a consequence of the transition from thick continental to thin oceanic crust.

Why does the seafloor get shallower as you approach each continent?

Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle’s convection currents makes the crust more plastic and less dense.

Why are oceanic ridges elevated?

Oceanic ridges are elevated as new magma cools and becomes more dense. The temperature of the underlying mantle increases, decreasing its density, and therefore separates from the lithosphere. The temperature of the underlying mantle decreases, increasing its density, and therefore becomes part of the lithosphere.

What happens at an oceanic ridge quizlet?

A mid- ocean ridge or mid- oceanic ridge is an underwater mountain range, formed by plate tectonics. This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.

You might be interested:  Readers ask: How To Deal With A Mountain Lion?

How do oceanic ridges differ from continental mountain ranges quizlet?

How do oceanic ridges differ from continental mountain ranges? Most mountain ranges form through the collisions of two continents, whereas oceanic ridges form when material upwells from the mantle and generates new oceanic crust.

Why are oceanic ridges elevated quizlet?

Which of the following are not associated with a mid ocean ridge? Why are mid ocean ridges elevated compared to the surrounding ocean floor? Because newly formed lithosphere is hotter and therefore less dense than the surrounding rocks. Which of the following is not part of an ophiolite complex?

Where is the oceanic ridge system present?

The oceanic ridge system is a continuous mountain chain located under the surface of the sea. Parts of this vast mountain range can be found in all of the major oceans of the world, including the Atlantic Ocean, where its course follows a path down the middle of the ocean.

How oceanic ridge is formed?

A mid-ocean ridge or mid -oceanic ridge is an underwater mountain range, formed by plate tectonics. This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.

How is an oceanic ridge different from an oceanic rise?

Wiseman and Ovey (1953) present the term oceanic rise as a long and broad elevation of the deep seafloor that rises gently and smoothly, and a ridge is considered to have steeper sides and less regular topography than a rise.

Leave a Comment

Your email address will not be published. Required fields are marked *