Volcano Report

WHAT IS A VOLCANO? Layers and layers of little fragments and ash named cinders.

WHAT ARE VOLCANOES?

Mountains with chambers underground that contain magma and other solid liquid.

HOW ARE THEY FORMED?

When an eruption occurs ash and little fragments named cinders are left floating in the sky all the layers created by the ash and the little fragments and that is how are volcano is formed. HOW DOES AN ERUPTION OCCUR? y When the two tectonic plates collide underground and then ou got yourself an eruption.

STRATOVOLCANOES are found in Mt.st.Helens in the U.S and Mt.Fuji in Japan,Stratovolcanoes have really high-silica and it also contains alot of viscous magma. Eruptions explode with ash and small fragments named cinders, Stratovolcanoes produce slow-moving lava. Stratovolcanoes are found sometimes on subduction zones, the most recent eruption involving a stratovolcano was Mt.St.Helens in the U.S. SHIELD VOLCANOES named after an ancient warriors shield obviously because it is shaped like it. Shield volcanoes also have shallow sided mounds and they also have flat bottemed craters. Shield volcanoes have low silica which is good but produce fluid lava. Most Shield volcanoes are found on the oceans crust. CINDER CONES are the smallest volcanoes in the world. Cinder cones contain alot of dissoved gas. When a cinder cones erupts it spits little fragments cinders, Cinder cones have a sunset crater in Arizona.

In Auckland there are 48 volcanoes and 40% is Cinder cones and 8% is Strato and Shield volcanoes.

I really hope I don't get to see an eruption because I don't want to DIE!!!!