EARTH SCIENCE
VOLCANOES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Basaltic Magma
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Andesitic Magma
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Rhyolitic Magma
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None of the above
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Detailed explanation-1: -Basaltic: Lastly, this type of magma has the lowest viscosity of all three magma types. It contains 45-55% silicon dioxide, so it is very fluid. The temperature of this magma is highest among the three different types, but its gas content is much less.
Detailed explanation-2: -Answer and Explanation: Basaltic magma has the lowest viscosity because of its composition. Basaltic magma is mostly composed of iron, calcium, and magnesium, while half or less of it is composed of silica, potassium, and sodium.
Detailed explanation-3: -Volumetrically, most lava is of basaltic composition. Basaltic melts have overall lower gas contents and are more fluid than their andesitic-to-rhyolitic counterparts.
Detailed explanation-4: -Part A: Eruption of Less-Gassy Magma These rocks are called basalt (ba-SALT) and pumice (PUM-is).