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.
Ash
The smallest particle in tephra is dust
Volcanic Blocks (greater than 64 mm)
Lappilli ( Between 2 and 64 mm)
Ash (less than 2 mm)
Tephra refers to the fragments of volcanic rock and lava that are blasted into the air by explosions. The largest sized tephra is called a volcanic bomb.
Volcanic Ash
volcanic blocks :-)
Tephra Type. (:
cinder cone
A stratovolcano.
Blocks is the name used for the biggest pieces of tephra. Tephra is produced by a volcanic eruption.
Composite
it is a type of tephra
Tephra Type. (:
Cinder Cone Volcano
cinder cone
A stratovolcano.
Blocks is the name used for the biggest pieces of tephra. Tephra is produced by a volcanic eruption.
Composite
ash because it gets in our lungs and can give cancer
Mount Bailey is a tephra cone and shield volcano, and is located in Oregon.
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
The Bus Obo volcano was formed by tephra and contains a type of lava called felsic lava.
Tephra is basically ash, rock, cinders, and solidified lava spurted from a volcano.