3 TYPES OF VOLCANOES

SHEILD

HOW DO THEY FORM?

Thin layers of lava pour out a vent and

harden on top of previous layers

TYPE OF ERUPTION AND LAVA

Quiet eruption with

thin, runny lava

PHYSICAL DESCRIPTION

Wide, flat gently sloping mountain

2 EXAMPLES AND THEIR LOCATIONS

Mauna Kea, Mauna Loa and Kilauea in the Hawaiian

Islands

CINDERCONE

HOW DO THEY FORM?

Thick lava produces ash, cinders and bombs, which pile up around the vent forming a steep cone

shaped pile

TYPE OF ERUPTION AND LAVA

Explosive eruption with

thick magma (which will produce ash, cinder, bombs

and a pyroclastic flow)

PHYSICAL DESCRIPTION

Tall, pointed, steep, cone shaped hill or

mountain

2 EXAMPLES AND THEIR LOCATIONS

Sunset Crater in Arizona and

Eldfell in Iceland

COMPOSITE OR STRATO

HOW DO THEY FORM?

Quiet eruptions with lava flows

alternating with explosive eruptions of ash,

cinders and bombs

TYPE OF ERUPTION AND LAVA

Quiet and explosive eruptions

with either thin or thick lava

respectively

PHYSICAL DESCRIPTION

Tall cone shaped mountain with

alternating layers of lava and ash

2 EXAMPLES AND THEIR LOCATIONS

Mt. Fuji in Japan and

Mt. St. Helens in Washington