Question

plate tectonics: divergent boundaries what is the main characteristic of divergent boundaries in plate tectonics? plates move apart from each other. plates slide past each other horizontally. plates move toward each other.

Explanation:

To determine the main characteristic of divergent boundaries in plate tectonics, we analyze each option:

• "Plates move apart from each other": Divergent boundaries are defined by tectonic plates moving away from one another, allowing magma to rise and create new crust (e.g., mid - ocean ridges or rift valleys like the one in the image).
• "Plates slide past each other horizontally": This describes transform boundaries (e.g., the San Andreas Fault), not divergent boundaries.
• "Plates move toward each other": This is the characteristic of convergent boundaries (where subduction or mountain - building occurs), not divergent boundaries.

Answer:

A. Plates move apart from each other.