Movements in the earth's crust can cause both volcanic eruptions and earthquakes. To help you understand the processes involved, we have collected a range of volcano terms with their definitions, volcano diagrams, volcano images and more to help with your learning about the geography topic of volcanoes. Scroll down to find out more.

WHAT IS A VOLCANO?

Geography topics for you to learn and enjoy

Volcano

worksheet

The parts of a volcano | Inside a volcano | Label a volcano diagram

Label a volcano

diagram. 

What is a volcano?

A volcano is an opening in the earth's crust through which magma, ash and gas erupt. Volcanoes can be different shapes although they are commonly cone shaped 

mountains as seen in this picture. These cone shaped volcanoes are made up of layers of ash and lava. Most volcanoes are found at plate boundaries.

Volcano picture - Mount Fuji in Japan | volcanoes for kids | volcanoes ks2

Mount Fuji, Japan

Mount Fuji in Japan. This famous volcano sits close to

the point where three tectonic plates meet.

Volcano picture | volcano erupting | Mount Etna | volcano for kids

An active volcano is one that is known to have erupted in recent times, or which is likely to erupt again. For example, Mount Etna in Italy. 

What is an active volcano?

Mount Etna in Italy is an active volcano.

It has erupted nine times since the year 2000.

What is a dormant volcano?

A volcano that has erupted in the last 2000 years but not recently. It is inactive but not extinct. It is difficult to decide whether a volcano is dormant or extinct. 

What is an extinct volcano?

A volcano that is not expected to erupt again. For example, Mount Kenya is an extinct volcano.

Mount Etna, Italy

Inside a volcano

This diagram has all the parts of a volcano clearly labelled. Most volcanoes are cone shaped mountains like this one in the diagram. Volcanoes can erupt from the crater on their peak or from asecondary vent on their side. The side of a volcano

 is called the flank.

The layers of ash and lava are built up over successive eruptions. The more eruptions there are, the more layers of ash and lava there will be.

Volcano diagram - inside a volcano | parts of a volcano | volcanoes for kids | volcano parts | labelled volcano
volcano pictures - Volcanic eruption | volcano for kids

Volcano

Images

What is a shield volcano?        What is a cone volcano?

Volcano diagram | shield volcano diagram | diagram of a volcano

Cone volcanoes are usually steep sided. They are formed from layers of ash and lava. Shield volcanoes are made from 

fast flowing, lava which flows easily over the surface, forming larger volcanoes with gentle sides.

Famous volcanoes

The top 10 volcanoes according to Time magazine are:
  • Krakatoa

  • Mount Vesuvius

  • Mount St. Helens

  • Mount Tambora

  • Mauna Loa

  • Eyjafjallajokull

  • Mount Pelée

  • Thera

  • Nevado del Ruiz

  • Mount Pinatubo

Read more: Time Magazine 

Famous volcanoes - Mount Etna | volcano pictures for kids

Mount Vesuvius, Italy

The city of Naples with Mount Vesuvius  in the background.

Where are volcanoes located?

Volcanoes are most commonly found along plate boundaries.

The earth's crust is cracked and the pieces of the Earth's crust formed by the cracks are called tectonic plates.

These tectonic plates can be seen in this map.

The plates are continually moving (albeit very slowly, a few millimetres a year) and this movement helps to form volcanoes. 

Volcano videos

What does the inside of a volcano look like and how close can someone get to a live volcano? Both these questions are answered here in this short clip lasting 1 minute.

Up close to the molten hot lava, what would it look like? Have a look in this three minute clip.

This excellent animation shows what is happening inside the earth to make the tectonic plates move around. 

Geography topics for you to learn and enjoy