A volcano is a mountain. It has a hole at the top. Some volcanoes have hot melted rock inside. Learn more about volcanoes below.
Volcanoes can erupt .
Ash and lava shoot out of a volcano. Lava is hot. It flows down the volcano.
Volcanoes can be quiet.
Not all volcanoes are active. Some are dormant. This means that they have not erupted in a long time.
People study volcanoes.
Volcanologists are scientists. They study volcanoes. They check to see if volcanoes are active . They warn people if one will erupt soon. This saves lives.
Volcanoes can form land.
Lava cools into rock. This forms new land. Hawaii was formed by volcanoes. Diamond Head volcano is in Hawaii. It is not active.
Did You Know?
Magma is hot liquid rock. It is deep inside the volcanic mountain. When it erupts out of the mountain, it is known as lava.