What type of plate boundaries occur along spreading centres where plates are breaking apart and pushing upward from the mantle by magma to form a new crust?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Divergent boundaries
- Plate boundaries where plates are breaking apart and pushing upward from the mantle by magma to form new crust are known as "divergent boundaries" or "constructive plate boundaries."
- At these boundaries, the Earth's tectonic plates move away from each other, and the upwelling of molten rock (magma) from the mantle creates new crust as it solidifies, leading to the formation of features like mid-ocean ridges on the ocean floor or continental rift zones on continents.
- This process is a fundamental aspect of plate tectonics and plays a crucial role in shaping the Earth's surface.