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Which is not true?
Basaltic magma has a low viscosity and retains little gas.
Andesitic magma has both an intermediate gas content and explosiveness.
An increase in temperature increases a magma's viscosity.
An increase in silica increases the viscosity of magma.

Respuesta :

YourSackOfLearning

Answer: An increase in temperature increases a magma's viscosity.

Explanation: Lower temperature magmas have higher viscosity than higher temperature magmas (viscosity decreases with increasing temperature of the magma).

The molten or semi-molten matter that is found underground and forms igneous rocks is called magma. It is very hot and is found in the lithosphere of the Earth's surface.

The answer is :

Option C. An increase in temperature increases a magma's viscosity.

This can be explained as:

  • The Basaltic magma has low gas content and viscosity because of this non-explosive eruptions occurs.

  • Andesite magma has strong explosion forces and the gas content is intermediate.

  • The greater degree of polymerization is due to high silica content.

Therefore, an increase in the temperature does not increase the viscosity of magma.

To learn more about Basaltic magma and Andesitic magma follow the link:

https://brainly.com/question/1069670

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