volcanoes

Morphology

Types of volcanoes

Activity

How active a volcano is

Pacific ring of fire

Area characterized by frequent earthquakes and volcanic eruptions

Subduction

Process where tectonic plates move

Magma

Molten rock beneath the surface

Lava

Magma extruded during an eruption

Vent

Opening of the volcano

Crater

Top of the volcano

Volcanic cone

Pile of lava, ash, dust, and rock around the vent

Fissure

Elongated crack in Earth's crust

Conduit

Passageway where magma travels

Flank

Side of volcano

Magma chamber

Underground compartment where magma is stored

Hawaii

Largest volcano on earth

Hawaiian eruption

Least violent type with highly fluid or runny lava

Vulcanian eruption

Thick viscous magma flows around the vent as solid lava

Plinian eruption

Most violent and explosive type of eruption

Strombolian eruption

Violent eruption featuring continuous ejection of gas and magma

Lava flow materials

Are those coming from lava ejected during eruption

Pyroclastic materials

Composed mainly of ash, gas, and rock

AA

Lava with rough spiny and clinkered texture

Pahoehoe

Very fluid lava

Blocks

Fragments of lava exceeding 64mm

Lava flow

Stream of molten rock

Pillow lava

Formed when lava flows underwater

Agglutinates

Cinders, scoria, or pumice fragments welded together

Volcanic ash

Fragments of lava less than 2mm

Blocks

Solid fragments of lava larger than 64mm

Bombs

Fragments which are fluid or partially fluid exceeding 64mm

Cinders

Vesicular lava fragments with a size of 1cm or higher

Lapili

Fragments of lava or rocks ranging from 2 to 64mm