15 Questions
What is the primary factor responsible for the formation of ocean basins?
Plate tectonic activity
What is the term used to describe the entire shape of an ocean floor?
Bathymetry
What feature forms the rim of an ocean basin?
Continental shelf
How many ocean basins are recognized by most oceanographers?
5
What percentage of the planet is covered by the world ocean?
70%
What is the primary way that ocean basins are formed?
Seafloor spreading or subduction
What occurs when tectonic plates crash into each other?
Subduction
What is the characteristic of an active continental margin?
Presence of a convergent plate boundary
What is the function of fractured vaults in the Mid-Atlantic Ridge?
To relieve tension along the ocean ridge
What is the characteristic of an inactive continental margin?
Presence of abyssal plains
What type of rock is brought to the seafloor's surface by volcanic eruptions as a result of plate movement?
Basalt
What is the characteristic of the slope of the Mid-Atlantic Ridge?
Steep and rugged
What is a characteristic of abyssal hills?
Their height decreases as you move away from the oceanic ridge
What is a characteristic of guyots?
They have a flattened top due to erosion
What is a characteristic of ocean trenches?
They are steep and V-shaped
Learn about the different types of basins on Earth, including ocean basins, river drainage basins, and structural basins. Discover how they are formed by geological forces and their characteristics.
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