A volcano is an opening in the surface of the Earth from which hot magma flows out. The following are the structural features of a volcano: Vent: It is an opening from which hot magma flow out to the surface of the Earth. It is a circular pipe like structure.
What is volcano explain?
A volcano is an opening in the earth’s crust through which lava, volcanic ash, and gases escape. … Beneath a volcano, liquid magma containing dissolved gases rises through cracks in the Earth’s crust. As the magma rises, pressure decreases, allowing the gases to form bubbles.
What is volcano explain it with diagram?
A volcano is an opening in the surface of the Earth from which hot magma flows out. The following are the structural features of a volcano: Vent: It is an opening from which hot magma flow out to the surface of the Earth. It is a circular pipe like structure.
What is volcano explain with example?
Volcano – definition
When hot liquid and gaseous materials are thrown out from the mantel of the earth into the surface, its called a volcano. During this process ash, water vapour,various types of poisonous and inflammable gases, hot molten magma are thrown out. The hot molten magma are called lava.
What is a volcano for Class 7?
An opening in the earth’s crust that allows hot molten lava, ash and gases to escape from below the surface, is called a volcano. … With time, the lava and ash flow out of the magma chamber, cool down, solidify and accumulate in layers forming a Volcano.
What is the 5 description of volcano?
A volcano is a mountain that opens downward to a pool of molten rock below the surface of the earth. … In an eruption, gases and rock shoot up through the opening and spill over or fill the air with lava fragments. Eruptions can cause lava flows, hot ash flows, mudslides, avalanches, falling ash and floods. You may also read,
What is volcano very short answer?
The Short Answer: A volcano is an opening on the surface of a planet or moon that allows material warmer than its surroundings to escape from its interior. When this material escapes, it causes an eruption. Lava fountain at Kīlauea Volcano, Hawai`i. Check the answer of
What are the parts of volcano?
The main parts of a volcano include the magma chamber, conduits, vents, craters and slopes. There are three types of volcanoes: cinder cones, stratovolcanoes and shield volcanoes.
What is the use of volcano?
“It gives us really fertile soils, which are great for farming and crops.” Volcanoes also provide a good environment for the formation of new habitats for animals, plants and insects, she said. Hot springs and geothermal energy are additional benefits. Read:
What are 3 types of volcanoes?
Geologists generally group volcanoes into four main kinds–cinder cones, composite volcanoes, shield volcanoes, and lava domes.
What is volcano and its types?
There are three main types of volcano – composite or strato, shield and dome. Composite Volcanoes. Composite volcanoes, sometimes known as strato volcanoes, are steep sided cones formed from layers of ash and [lava] flows. The eruptions from these volcanoes may be a pyroclastic flow rather than a flow of lava.
What is the 22 active volcanoes in the Philippines?
Item No. | Name of Volcano | Province |
---|---|---|
19 | Musuan (Calayo) | Bukidnon in Mindanao |
20 | Parker | South Cotobato/General Santos/ North Cotabato/Sarangani Provinces in Mindanao |
21 | Pinatubo | Boundaries of Pampanga, Tarlac and Zambales in Luzon |
22 | Ragang | Lanao del Sur and Cotobato in Mindanao |
What are the major types of volcanoes?
Strictly speaking there are two broad types of volcano, a stratovolcano and a shield volcano, although there are lots of different volcanic features that can form from erupted magma (such as cinder cones or lava domes) as well processes that shape volcanoes.
What are the 11 types of volcanoes?
- Cinder Cone Volcanoes: These are the simplest type of volcano. …
- Composite Volcanoes: Composite volcanoes, or stratovolcanoes make up some of the world’s most memorable mountains: Mount Rainier, Mount Fuji, and Mount Cotopaxi, for example. …
- Shield Volcanoes: …
- Lava Domes:
What is a volcano for Class 8?
A volcano is a landform, a mountain, where molten rocks erupt through the surface of the planet. The volcano mountain opens downwards to a pool of molten rocks underneath the surface of the earth. Pressure builds up in the earth’s crust and this is the reason why eruptions occur.
What is the oldest volcano?
How old is the oldest volcano? The oldest volcano is probably Etna and that is about 350,000 years old. Most of the active volcanoes that we know about seem to be less than 100,000 years old. Volcanoes grow because lava or ash accumulates on the volcano, adding layers and height.