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  Volcanoes
What causes volcanoes?
Are there different types of volcanoes?
What effects do volcanoes have?
Can we predict when a volcano is going to erupt?
Which volcano has killed the most people?
Do volcanoes do anything good?
Volcano facts

 
An eruption at Mount Etna, near Sicily Are there different types of volcanoes?
The type of magma in the earth can create different volcanoes.

If the magma is quite thin, the gas can escape easily and there will not be an explosion. The magma just comes out of the mountain and flows down the sides, like Volcanoes in Hawaii and Mount Etna.

But, if the magma is thick and sticky, the gas cannot escape, so it builds up and up until it explodes.

This can cause landslides and sends out huge clouds of burning rock and gas, which devastate everything around them, like the famous eruptions at Mount St Helens and Montserrat.

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