what types of structures form at divergent boundaries? Select the two correct answers.
a faults
b ridges
c cracks
d volcanoes
e trenches
b ridges
d volcanoes
At divergent boundaries, tectonic plates move away from each other. This movement allows magma from the mantle to rise to the surface, creating new crust as it cools and solidifies. This process often forms mid-ocean ridges, which are underwater mountain ranges, and can also result in volcanic activity as the magma breaks through the Earth's surface. Faults and cracks can occur as the crust is stretched and thinned, but they are not the characteristic structures. Trenches are typically associated with convergent boundaries, where one plate is subducting beneath another.