Volcanoes and Extrusive Rocks
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | Mount St. Helens
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| The term ___ is used for molten rock on the Earth's surface. | show 🗑
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| Condensation of the water vapor by degassing magma during the time following Earth's formation produced the ____. | show 🗑
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| _____ are tunnel-like caves within a lava flow. | show 🗑
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| show | broad; gently
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| show | All of the answers are correct.
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| What are the three factors that influence viscosity of a lava? | show 🗑
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| show | pyroclastic flow
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| The Roman city of _____ was destroyed by the eruption of Vesuvius in 79 AD | show 🗑
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| The more _____ the lava, and the greater the amount of gas trying to escape, the more violent the eruption. | show 🗑
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| show | silica-rich
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| The most abundant silicic volcanic rock is __. | show 🗑
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| The most common mafic volcanic rock is __. | show 🗑
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| A _____ volcano is composed of alternating layers of pyroclastic fragments and solidified lava flows. | show 🗑
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| _________ crystallizes from an intermediate composition lava. | show 🗑
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| show | not to be explosive or particularly dangerous
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| A _________ is a volcanic depression much larger than the original crater, formed when the volcano collapses into a vacated magma chamber. | show 🗑
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| show | Pahoehoe
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| show | Aa
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| show | cinder cone
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| A _________, a mixture of gas and volcanic debris, may blast out laterally under a viscous plug capping a volcano. | show 🗑
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To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Thomas.Siu
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