Volcanic ash

Question

Volcanic ash

Quizplus · Accepted Answer

Volcanic ash is composed of microscopic shards of glass, formed when molten rock (magma) is blasted into the air by volcanic explosions and cools rapidly. It can be as fine as talcum powder or as coarse as sand. Option B is incorrect because volcanic ash is not formed when hot lava causes plants to burn, and option C is incorrect because cinder is much larger than volcanic ash. Option D is incorrect because volcanic ash can be erupted by various types of volcanoes, not just rift zone volcanoes.

Volcanic Ash