Quiz on Volcanoes

It is the main opening at the peak of the volcano.

Molten rock expelled from a volcano during volcanic eruption

It is the rupture in the crust that allows hot lava to escape from a magma chamber

below the Earth’s surface.

It is consists of fragments of rocks, minerals and volcanic glass created during

volcanic eruptions.

It is the Philippine National Institution dedicated to provide information on the

activities of volcanoes, earthquakes, and tsunamis.

Arrange the statements about the formation of volcanoes in their

correct sequence.

A. In the mantle, the plate is gradually heated

B. When the pressure becomes high enough in the magma chamber, magma

forces its way to the crust and blows its top creating an opening.

C. The molten rocks (magma) collect in the magma chamber.

D. The movement of the earth’s crust sometimes cause a plate to slide down the

mantle.

3. E. This action releases steam that melts the rock on top of it.