18. True or False...Magma approaches the ocean floor at divergent plate boundaries.

Understanding Magma and Divergent Plate Boundaries

Magma is molten rock beneath the Earth's surface. When magma rises to the surface and solidifies, it forms igneous rocks. At divergent plate boundaries, tectonic plates move away from each other. As the plates separate, magma rises to fill the gap created by the moving plates.

As magma approaches the ocean floor at divergent plate boundaries, it can lead to the formation of new crust. This process is known as sea-floor spreading. The magma cools and solidifies to create new oceanic crust, expanding the size of the ocean basins.

Overall, the statement that magma approaches the ocean floor at divergent plate boundaries is indeed true. This process plays a crucial role in the formation of new crust and the dynamics of Earth's tectonic plates.