GEOLOGY

Detailed explanation-1: -Earthquakes induced by rising lava or magma beneath active volcanoes is called volcanic earthquakes.

Detailed explanation-2: -Decompression melting often occurs at divergent boundaries, where tectonic plates separate. The rifting movement causes the buoyant magma below to rise and fill the space of lower pressure.

Detailed explanation-3: -This semisolid magma continues to move upwards through the crust, experiences less pressure and so becomes more fluid. The result is the lava we see erupting from active volcanoes.

Detailed explanation-4: -Most earthquakes directly beneath a volcano are caused by the movement of magma. The magma exerts pressure on the rocks until it cracks the rock. Then the magma squirts into the crack and starts building pressure again. Every time the rock cracks it makes a small earthquake.