Question

How explosively or quietly a volcano erupts is not affected by the _____.? A. magma’s composition C. concentration of dissolved gases in the magma

Answer 1

Answer: How explosively or quietly a volcano erupts is not affected by the:

C) concentration of dissolved gases in the magma.

Explanation: Therefore, when a volcano is explosive or less explosive, is as a result of the composition of magmas in different areas or location.

Answer 2

Options:

A) magma’s composition

B) magma’s temperature

C) size of the volcano’s cone

D) concentration of dissolved gases in the magma

Answer:

B) magma’s temperature

Explanation:

In explosive eruptions we can observe:

• The lavas are very viscous, flow with difficulty and prevent the release of gases, thus causing violent explosions;
• Because of its viscosity, lava sometimes does not spill, forming rounded structures that are called domes or domes;
• In some situations, the lava solidifies even inside the chimney, forming volcanic needles, which may later be evident in cone erosion.