1.
mountain formed from a lava and/or pyroclastic materials
3.
erupted within historical times
4.
no recorded eruptions and intensely weathered
5.
morphologically young-looking
6.
broad dome with gentle slope
7.
large and high edifice like Mayon
8.
has crater greater than 2 km in diameter, violent eruptions
9.
non-violent volcanic eruption
10.
violent volcanic eruption
11.
type of earthquake due to volcanic eruption
12.
happened to Mayon last February 2020
13.
resistance of a liquid to flow
14.
small, jagged pieces of rocks less than 2 mm in diameter
15.
volcanic materials mixed with water
