What are volcanoes?

What are volcaneos and how do they form ?

 What is a volcano?

A volcano is a mountain or a hill with an opening at the top through which hot materials such as lava , erupt  .  Most volanoes are found along the pacifc ocean. 

How do volcanos form?

Volcanos begin to form beneath the ground that we walk on. Many, many football fields below the earth a substance called Magma forms. Magma is extremely hot and red in color. Magma is a very important part of the volcano because magma is what creates Lava that erupts  from the volcano.  Magma flows all around the volcano and sometimes escapes from the sides before it gets a chance to erupt as lava. 

An eruption is like shaking a can of soda and opening it right away. The Lava   that shoots out of the top flows all around, and begins to cool down. After the lava cools down it becomes hard and forms a rock. Once the Lava starts to pile up and grow, mountains and islands form!