It is composed of thin flows with smooth surface that sometimes feature ropy folds

It is the fastest flowing lava because of its relatively low viscosity.

It refers to volcanic rock and lava materials that are ejected into the air by explosions or carried upward by the eruption column's hot gases or lava fountains.

It is an Indonesian term, means lava or lava flow.

It is the sudden catastrophic collapse (landslide) from an unstable side of a volcano.

It is a special kind of tephra that follow a projectile path when ejected from the volcano.

It is typically associated with stratovolcanoes and commonly forms lava domes.

It composed not only of melted minerals but also volatile fraction-substances that may become gaseous or give off gases when heated.

The amount of gas involved in eruptions determines not only the type of material that comes out but also the type of landform  a volcano will be made of. 

Basaltic lava is more viscous than rhyolitic lava.

Pillow lavas are thicker than pahoehoe. 

The factors that influence slope stability are related to gravity, water, strength of slope materials, and regional and local structures.

Volcanic eruptions and related activities cause changes on the Earth's surface by creating and destroying landforms.