15 Questions
What is the main characteristic of Shield volcanoes?
Low-explosivity and mostly lava flows
What distinguishes Cinder Cone volcanoes from Composite Cone volcanoes?
They erupt multiple times
Which type of volcano is described as typically non-explosive?
Lava Domes
Why are Composite cone volcanoes also called stratovolcanoes?
For containing layers of ash, lava, and rock fragments
What is the main characteristic that differentiates Composite cone volcanoes from Lava Domes?
Formation by eruption of different materials on a slope
What is the main reason why shield cone volcanoes have less explosive eruptions than composite volcanoes?
They are made almost entirely of fluid lava flows
Which type of lava is typically found in shield cone volcanoes due to its low viscosity and more fluid nature?
Basalt
What is a pyroclastic flow composed of in a composite cone volcano?
Ash, rock fragments, and hot gases
What geological feature is common to both Mount Saint Helens and Mount Vesuvius?
Central crater
What distinguishes a shield cone volcano from a composite cone volcano based on their physical appearance?
Gentle slopes and wide base
Which of the following statements about cinder cone volcanoes is true?
Their eruptions are relatively weak and often last for several years.
What is the primary process by which cinder cone volcanoes are formed?
Explosive eruptions that launch lava into the air, which cools and falls back as cinders.
Which of the following is true regarding the composition of lava in cinder cone volcanoes?
They are typically composed of basalts or andesites.
Which of the following is an example of a lava dome volcano?
Lassen Peak
What is a key characteristic of lava dome volcanoes?
They are formed by viscous lavas that cannot flow far from the vent.
Explore the main types of volcanoes and understand why some have cone shapes while others have shield shapes. Learn about the unique characteristics of volcanoes as openings or vents in the Earth's crust that allow molten rock to reach the surface.
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