Question

Explosive magma usually has _____.

high viscosity, high gas content, and high silica content
high viscosity, but low gas and silica content
high viscosity and gas content, but low silica content
low viscosity, but high gas and silica content

Answer 1

high viscosity, high gas content, and high silica content

Step-by-step explanation:

Answer 2

If the magma has high gas content and high viscosity, the gas will expand in an explosive fashion and break the liquid into clots that fly through the air and cool along their path through the atmosphere. Alternatively it blast out solid pieces of rock that once formed the volcanic edifice.

Step-by-step explanation: