Inside Level A Unit 3 Selection 1

A volcanologist studies volcanoes.

If something is active, it is likely to move or to show action.

The term is 'force'.

The word is 'It'.

If something is dangerous, it is unsafe.

A volcano is an opening in the Earth's crust through which molten lava, ash, and gases are ejected.

The main components of a volcano include the magma chamber, vent, crater, and lava flow.

Active volcanoes are currently erupting or show signs of erupting; dormant volcanoes have not erupted in a long time but may erupt again; extinct volcanoes are not expected to erupt again.

Studying volcanoes helps predict eruptions, understand geological processes, and mitigate hazards to human life and property.

An example of an active action is a person running or a dog barking.