Volcanoes:

 A volcano is an aperture or vent on the crust of the Earth through which hot, solid, liquid, and gaseous substances (magma) burst forth from the internal core of the planet. Lava is released onto the surface as magma rises. Moreover, when plates separate, volcanoes are created. Typically, volcanoes consist of the following main parts. They are as follows: 

• A magma chamber, which is a sizable liquid rock pool located beneath the Earth's surface
•  Vents, which are holes that allow air, smoke, fumes, magma, etc. to escape
•  A volcanic cone is a formation formed when magma is released from a vent and takes the form of a cone.

A crater is the bowl-shaped depression where magma flows out of a volcano's summit.

Volcanoes are divided into three categories based on the frequency of their eruptions: 

1. Active, 
2. Dormant, and 
3. Extinct volcanoed 

ARE YOU KNOW? 

that The Latin term VULCAN, which refers to the Roman "God of Fire," is where the word "volcano" originates.

Active volcano:-

Volcanoes that continuously spew out gases, ash, and broken rock are considered active volcanoes. Mount St. Helens in the United States, for instances

Dormat volcano Of Sleeping volcano:-

Volcanoes classified as dormant are those that do not exhibit any signs of eruption activity for an extended period of time.  There may occasionally be an unexpected explosion that results in unfathomable losses in terms of both life and property (e.g.) Japan’s Mount Fujiyama

Extinc or Dead volcano:-

A volcano is referred to as extinct or dead when its eruptions end permanently (e.g.) Tanzania's Kilimanjaro Mountain.

Additionally, volcanoes can be categorized as composite, shield, or dome based on their composition and structure.o 

Composite Volcano

A conical volcano formed by numerous layers of hardened lava, pumice, and volcanic ash is called a composite volcano, sometimes referred to as a strata volcano. These are frequently found in the Pacific Ocean, such as on Japan's Mount Fujiyama.an

 Volcanic Dome

A lava dome, also known as a volcanic dome, is essentially a circular mound created when viscous lava is slowly expelled from a volcano. Because of its high viscosity and silica content, the lava cannot flow very far from its vent. For instance. Mexico's Paricutin.

Shield Volcano

Strong, viscous lava forms shield volcanoes..s.

Hence the lava flows out in all directions to create a shield.

E.g., Mauna Loa, Hawaii

The majority of earthquakes and volcanic eruptions happen along plates rather than at random.