Answer the following questions about divergent boundaries, such as the Mid-Atlantic Ridge, and their associated lavas: a. Divergent boundaries are characterized by outpourings of what type of lava: andesitic, basaltic lava, or rhyolitic?
b. What is the source of these lavas?
c. What causes the source rocks to melt?

a) divergent boundaries are the plates move away from each other. the type of lava is basaltic

b) magma

c) convection current cause the rocks to melt

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.