Blocks is the name used for the biggest pieces of tephra. Tephra is produced by a volcanic eruption.
They are called volcanic bombs.
Dust is less then 0.25 in diameter, ash is larger then dust but less then 2 mm in diameter, and the somewhat larger tephra are called lapilli which are larger than dust but less then 64 mm in diameter.
why is tephra dangerous: Tephra is usually dangerous because it can come in small sizes or bigger sizes it is made up of rock and smoke
Tephra is stuff that comes out of the volcano, it is mainly disposed as rocks.
no its metamorphic
If you are referring to the crossword puzzle clue, a medium sized tephra is also known as lapilli.
They are called volcanic bombs.
Dust is less then 0.25 in diameter, ash is larger then dust but less then 2 mm in diameter, and the somewhat larger tephra are called lapilli which are larger than dust but less then 64 mm in diameter.
tephra
Tephra (:
Ashes, dust, cinders, scoria...
why is tephra dangerous: Tephra is usually dangerous because it can come in small sizes or bigger sizes it is made up of rock and smoke
Tephra is basically ash, rock, cinders, and solidified lava spurted from a volcano.
Tephra is stuff that comes out of the volcano, it is mainly disposed as rocks.
1)Clay-sized 2)Silt-sized 3)Sand-sized 4)Pebbles
no its metamorphic
Tefra