A volcano erupts, and lava flows down a mountainside. Which statement best describes this eruption? (On a timer~Taking the quiz) A. This is a quiet eruption caused by low-viscosity magma. B. This is an explosive eruption caused by high-viscosity magma. C. This is a quiet eruption with lava spewing out violently. D. This is an explosive eruption during which gases bubble out gently.

The correct answer is option A "This is a quiet eruption caused by low-viscosity"

Explanation:

Volcanoes don't generally emit similarly. Each volcanic eruption is one of a kind, varying in size, style, and synthesis of eruption material. One key to what exactly makes the eruption exceptional is the synthetic creation of the magma that takes care of a spring of gushing lava, which decides:

(1) the eruption style

(2) the kind of volcanic cone that structures

(3) the structure of rocks that are found at the spring of gushing lava.

Recollect from the rocks section that various minerals inside a rocks dissolve at various temperatures. The measure of fractional liquefying and the synthesis of the first rock decide the piece of the magma. Magma gathers in magma chambers in the outside at 160 kilo meters (100 miles) underneath the surface.

The words that portray piece of volcanic eruption likewise depict magma structure.

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.