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Pyroclastic Materials
Inside Volcanoes Lots of Lava Pyroclastic Materials Types of Volcanoes Causes of Eruptions 100 200 300 400 500 Final Jeopardy
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What are the two types of volcanoes scientists have classified?
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Explosive & Non-explosive
$100 Explosive & Non-explosive Back
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What is usually ejected from a non-explosive eruption?
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$200 lava Back
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What is usually ejected from explosive eruptions?
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pyroclastic materials
$300 pyroclastic materials Back
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What is the body of molten rock deep underground that feeds a volcano?
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$400 magma chamber Back
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What type of low-density, igneous rock is created by explosive eruptions? (Hint: it can float in water!)
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$500 pumice Back
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What type of lava is named by the Hawaiians for the way it makes you feel when you walk on it with bare feet?
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$100 Aa Back
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What type of lava is runny, slow, and always flows out of non-explosive volcanoes?
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$200 pahoehoe Back
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What type of lava is created when volcanoes erupt underwater?
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$300 pillow Back
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What type of lava is cool & stiff and does not travel far from an erupting vent?
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$400 blocky Back
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Which lava is the most viscous and travels very slowly?
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$500 pahoehoe Back
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What pyroclastic materials are formed when gases in stiff magma expand very quickly into microscopic particles?
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$100 ash Back
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What pyroclastic material are little cinders that cool before they hit the ground?
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$200 lapilli Back
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What pyroclastic materials are formed when magma hardens in the air and spins as it cools, before hitting the ground?
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$300 volcanic bombs Back
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What types of pyroclastic materials are formed when solid pieces of rock are ejected from volcanoes?
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$400 volcanic blocks Back
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What is formed when pyroclastic materials mix with water after an explosive eruption?
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$500 lahar Back
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What volcanoes tend to be the highest in elevation and form from explosive eruptions?
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Composite (Strato) Volcanoes
$100 Composite (Strato) Volcanoes Back
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What type of volcanoes are formed from repeated non-explosive eruptions?
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$200 Shield Volcanoes Back
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What type of volcanoes are formed from moderately explosive eruptions and composed of pyroclastic materials?
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$300 Cinder Cone Volcanoes Back
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What volcanic landform is created when a magma chamber’s roof partially collapses and causes the ground above it to sink?
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$400 caldera Back
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What volcanic landform is created from non-explosive lava buildups over millions of years?
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$500 lava plateau Back
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Most volcanoes are located around the Ring of Fire, which is on what tectonic plate?
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$100 Pacific Plate Back
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Volcanoes that form away from tectonic plate boundaries usually rest on top of these?
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$200 hot spot Back
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Volcanoes can become explosive if either of these two ingredients mix with the magma.
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$300 water & silica Back
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What causes a rapid expansion of super heated liquid water molecules to turn into gaseous steam molecules, making magma much more explosive?
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release of pressure (Boyle’s Law)
$400 release of pressure (Boyle’s Law) Back
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Rift zones can be found at which type of plate boundary?
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divergent plate boundary
$500 divergent plate boundary Back
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What is the tallest mountain in the world at over 36,000 feet
What is the tallest mountain in the world at over 36,000 feet? (Hint: it is a perfect example of a shield volcano)
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Mauna Kea Back
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