Volcanoes

Volcanoes

Ash and pieces of lava harden in the air and fall around a small vent. The hardened pieces of lava are called cinders. The cinders and ash build uo around the vent and form a steep volcano called a cinder cone Volcano.

Shield volcanoes have broad base and gently sloping sides. Sheild volcanoes are made by layers of lava flow out of the vent, harden and build up to form the cone.

Kilauea Volcanoin Hawaii

Clear Lake Volcanoein California

Composite Volcanoes

Cinder Cone Volcanoes

Shield Volcanoes

Inactive Volcano

Composite Volcanoes are made from layers of pyroclastic materials. Compostie volcanoes are like tall, conical moutains.

Active Volcano

1. The danger area of a volcano covers about a 20-mile radius.2.Erupting volcanoes can trigger tsunamis, flash floods, earthquakes, mudflows and rockfalls.3.There are more than 500 active volcanoes in the world. More than half of these volcanoes are part of the Ring of Fire. 4. Active volcanoes in the U.S. are found mainly in Hawaii, Alaska, California, Oregon and Washington.5.The name "volcano" has its origin from the name of Vulcan, a god of fire in Roman mythology.

Facts about Volcanoes