30 Questions
What is the main factor that differentiates the four main types of volcanoes?
Composition
Which type of volcano is typically characterized by low-explosivity and mostly lava flows?
Shield
What are composite cone volcanoes also called?
Stratovolcanoes
What type of material are composite cone volcanoes mainly composed of?
Andesite
What is the characteristic height range of cinder cone volcanoes?
100-400 m
What type of lava is typically found in composite cone volcanoes?
Felsic
Which famous volcano is a composite cone volcano?
Mount Vesuvius
What type of eruption is typically associated with shield cone volcanoes?
Effusive
What is the primary difference between shield cone and composite cone volcanoes?
Shape of the volcano
What material is a pyroclastic flow composed of?
Ash, rock fragments, and hot gases
What is a characteristic of cinder cone volcanoes?
They are typically among the smallest volcanoes in the world.
What kind of eruption do cinder cone volcanoes generally experience?
Explosive eruption lasting for several years
What type of lavas are typically found in cinder cone volcanoes?
Basalts and andesites
Which volcano is mentioned as the most recently developed cinder cone volcano?
Paricutin, Mexico
What distinguishes lava dome volcanoes from cinder cone volcanoes?
They are created by lavas that are unable to flow any great distance from the vent.
What is the primary characteristic that differentiates shield volcanoes from composite cone volcanoes?
Composition
What is the typical eruptive style associated with cinder cone volcanoes?
Mainly lava flows
What is the characteristic of lava domes that sets them apart from other types of volcanoes?
High silica and viscosity
What type of material are composite cone volcanoes mainly composed of?
Andesite
What is the primary characteristic of shield volcanoes?
Non-steep slopes
What distinguishes lava dome volcanoes from cinder cone volcanoes?
Lava domes are formed by viscous lavas that do not flow far from the vent, while cinder cone volcanoes are formed by explosive eruptions
What is the characteristic height range of cinder cone volcanoes?
Less than 400 m
What type of lavas are typically found in cinder cone volcanoes?
Basalts and andesites
Which famous volcano is a composite cone volcano?
Mount Saint Helens
What is the primary factor that differentiates cinder cone and shield cone volcanoes?
The nature of the lavas they produce
What distinguishes shield cone volcanoes from composite cone volcanoes?
Composite cone volcanoes have a wider base and gentler slope compared to shield cone volcanoes.
What type of lava is typically found in shield cone volcanoes?
Mafic
Which famous volcano is a shield cone volcano?
Mauna Loa
What distinguishes cinder cone volcanoes from shield cone and composite cone volcanoes?
Cinder cones are made from congealed lava exiting a single vent.
What type of lava is typically found in composite cone volcanoes?
Felsic
Study Notes
Volcano Types
- The main factor that differentiates the four main types of volcanoes is their shape and eruption style.
Shield Volcanoes
- Characterized by non-explosive eruptions and gentle slopes.
- Typically have a broad, gently sloping shape.
- Primary characteristic: gently sloping shape and non-explosive eruptions.
- Type of lava: fluid, basaltic lava.
Composite Cone Volcanoes
- Characterized by low-explosivity and mostly lava flows.
- Also called stratovolcanoes.
- Mainly composed of alternating layers of lava, ash, and other pyroclastic material.
- Type of lava: more viscous, andesitic lava.
- Example: Mount St. Helens.
Cinder Cone Volcanoes
- Characterized by small, steep-sided cones and explosive eruptions.
- Typically have a height range of 100-400 meters.
- Characterized by: small, steep-sided cones, and explosive eruptions.
- Type of lava: mafic to intermediate lava.
- Example: Paricutin, a recently developed cinder cone volcano.
Lava Dome Volcanoes
- Characterized by a steep-sided, dome-shaped volcano.
- Distinguishing feature: highly viscous lava that piles up around the volcanic vent.
- Differentiated from cinder cone volcanoes by their shape and eruption style.
Eruptions and Flows
- Pyroclastic flows: composed of hot, fast-moving ash, gas, and rock.
- Shield cone volcanoes: typically experience non-explosive eruptions.
- Cinder cone volcanoes: generally experience explosive eruptions.
- Lava domes: characterized by a slow, effusive eruption style.
Key Differences
- Primary difference between shield cone and composite cone volcanoes: shape and eruption style.
- Primary factor that differentiates cinder cone and shield cone volcanoes: shape and eruption style.
- What distinguishes lava dome volcanoes from cinder cone volcanoes: shape and eruption style.
Explore the characteristics of different types of volcanoes and understand why some are cone-shaped while others are shield-shaped. Learn about the unique features of each type and how they are differentiated based on size, composition, and explosiveness.
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