Question

D. Short Answer Questions.
1. What is a volcano?
2. Why do occur?​

Answer 1

Answer:

1). A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and most are found underwater.

2).Volcanoes erupt when molten rock called magma rises to the surface. Magma is formed when the earth's mantle melts. ... Runny magma erupts through openings or vents in the earth's crust before flowing onto its surface as lava. If magma is thick, gas bubbles cannot easily escape and pressure builds up as the magma rises.

Answer 2

Answer:

1..volcano is an opening on the surface of a planet or moon that allows material warmer than its surroundings to escape from its interior. When this material escapes, it causes an eruption.