Listen the text and find the missing words. A volcano is a big

. At the end of a volcano there is a magma chamber There is magma in the magma chamber.Magma is very hot liquid rock. Sometimes magma comes out of 

. If magma comes out very often, we call a volcano active . If magma does not come out of a volcano for a very long time we call it

. When magma comes out of a volcano we call it lava.

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