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Frothy rocks are caused by violent volcanic eruptions shoot out lava filled with gases. the lava cools quickly, while it is still in the air, and reaps the gases inside. rocks that form this ay are full of holes . two examples of these rocks are pumice and scoria
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∙ 11y ago
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What causes the frothy appearance of pumice and scoria?
Both are formed during the eruption of gas-rich lava. The gas forms bubbles in the lava, which remain in place after it solidifies.
Is sandstone a scoria granite or pumice?
None of those. Scoria, Pumice and Granite are igneous rocks. Sandstone is sedimentary.
Will scoria float or sink in water?
scoria will sink but pumice will float.
Are Scoria and Pumice pyroclastic rocks?
yes
What is a rock formed from lava that cooled quickly and entrapped air and other gases and is similar to scoria?
Pumice is similar to scoria in appearance and formed from very rapidly cooled lava, entrapping expanding gas in the form of air pockets and ruptured bubbles, giving it a vesicular texture.
What causes the frothy appearance of pumice and scoria?
Both are formed during the eruption of gas-rich lava. The gas forms bubbles in the lava, which remain in place after it solidifies.
Is sandstone a scoria granite or pumice?
None of those. Scoria, Pumice and Granite are igneous rocks. Sandstone is sedimentary.
How is scoria created?
Scoria is a frothy form of lava ejected from a volcano as individual pieces.
Will scoria float or sink in water?
scoria will sink but pumice will float.
Is scoria a granite rock?
No. Scoria is a basaltic lava ejected as fragments from a volcano, typically with a frothy texture.
Are Scoria and Pumice pyroclastic rocks?
yes
What is a rock formed from lava that cooled quickly and entrapped air and other gases and is similar to scoria?
Pumice is similar to scoria in appearance and formed from very rapidly cooled lava, entrapping expanding gas in the form of air pockets and ruptured bubbles, giving it a vesicular texture.
Can pumice be red?
No. However there is a similar rock to pumice called scoria, which is sometimes red.
Is pumice in a example of a mafic igneous rock?
No. Pumice is usually intermediate or felsic. The mafic equivalent of pumice is scoria.
One kind of volcanic glass that has holes caused by pockets of gas?
Scoria is the best answer, but under some circumstances, probably pumice
Why does scoria have a similar texture to pumice but does not float on water like pumice?
Scoria has thicker vesicle walls than pumice does. This means it has a lower proportion of open space in it, making it less dense than water.
What rocks float?
Vessicular Rocks. Eg Scoria and Pumice.
