Final answer:
Volcanic ash is the term used to describe air fall material from volcanoes. It consists of fragments of rock, minerals, and volcanic glass created during volcanic eruptions and measuring less than 2 mm in diameter.
Step-by-step explanation:
The term that describes air fall material from volcanoes is volcanic ash. Volcanic ash consists of fragments of rock, minerals, and volcanic glass that are created during volcanic eruptions and measure less than 2 mm in diameter.
It is carried by wind and can travel long distances from the volcanic vent.