| Type of Volcano Shape Height | Cinder Cone, AKA Scoria Cone Symmetrical cone Up to 1,200 feet (370 meters) | Shield Tall and broad Up to over 30,000 feet (9,000 meters) | Composite, AKA Strato Tall, steep, and symmetrical Up to 8,000 feet (2,400 meters) | Lava Dome Dome Up to 330 feet (100 meters) |
|---|
What are the 3 types of volcano according to shape?
Volcanoes are classified by the eruption type and by the volcanic cone shape. There are three basic cone shapes and six eruption types. The three cone shapes are
cinder cones, shield cones, and composite cones or stratovolcanoes
.
What are the different kinds of volcano according to shape and composition?
There are three main types of volcano –
composite or strato, shield and dome
. 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 are the 4 shapes a volcano can be?
Geologists generally group volcanoes into four main kinds
–cinder cones, composite volcanoes, shield volcanoes, and lava domes
.
Why are volcanoes different shapes?
Volcanoes have several shapes, which are
controlled by the composition of the magma and the nature of its eruption
. If a volcano produces very fluid lava (low in the compound SiO
2
, or silica), the magma flows a long distance before it cools, making a flat, shield-shaped volcano.
What are the 7 types of volcano?
- 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 are the 3 major types of magma?
The high temperatures and pressure under Earth's crust keep magma in its fluid state. There are three basic types of magma:
basaltic, andesitic, and rhyolitic
, each of which has a different mineral composition.
How many volcano types are there?
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 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 different types of eruption?
- Hydrothermal eruption. An eruption driven by the heat in a hydrothermal systems. …
- Phreatic eruption. An eruption driven by the heat from magma interacting with water. …
- Phreatomagmatic eruption. …
- Lava. …
- Strombolian and Hawaiian eruptions. …
- Vulcanian eruptions. …
- Subplinian and Plinian eruptions.
What is the height of a shield volcano?
Typical shield volcanoes found in California and Oregon measure 3 to 4 mi (5 to 6 km) in diameter and
1,500 to 2,000 ft (500 to 600 m) in height
, while shield volcanoes in the central Mexican Michoacán–Guanajuato volcanic field average 340 m (1,100 ft) in height and 4,100 m (13,500 ft) in width, with an average slope …
What is a basic lava?
Lava poor in silica, generally less than 52% total SiO
2
; typically dark and heavy, as basalt.
What is the side of a volcano called?
Flank
– The side of a volcano. Lava – Molten rock that erupts from a volcano that solidifies as it cools. Crater – Mouth of a volcano – surrounds a volcanic vent.
What type of volcano is most powerful?
Stratovolcanoes
are considered the most violent. Mount St. Helens, in Washington state, is a stratovolcano that erupted on May 18, 1980.
Why is Taal volcano a complex volcano?
Taal is defined as a “complex volcano” – it doesn't have just one main vent or cone but
several eruption points that have changed over time
. … Volcano Island alone has 47 craters and 4 maars – volcanic craters that form when hot magma comes into contact with shallow ground water, producing a violent steam explosion.
Why do you study the shape of volcanoes?
This is important because the shape of a volcano can tell scientists about what sort of eruption can occur—
the volcano's personality
! Humans are different from volcanoes—they can look very similar but have very different personalities.
