Deposits and Eruption P2

Deposits and Eruption P2

By Restie Carullo

Multiple Choice

What pyroclastic material entombed the city of Pompeii with 3m thick and preserved the ancient Roman Life?

• cinders

• lapilli

• pumice

• scoria

Multiple Choice

What’s the difference between pahoehoe and aa lava flow?

• Pahoehoe exhibit smooth surfaces while aa have rough surfaces.

• Pahoehoe exhibit rough surfaces while aa have smooth surfaces.

• Pahoehoe form lava tubes while aa form pillow lavas.

• Pahoehoe form pillow lavas while aa form lava tubes.

Multiple Choice

Which volcano buried the Roman City of Pompeii in A.D. 79?

• Krakatoa

• Mount St. Helens

• Tambora

• Vesuvius

Multiple Choice

These pyroclastic materials are also known as little “stones” and cinders.

• bombs

• lapilli

• pumice

• scoria

Multiple Choice

How do volcanic bombs differ from the blocks of pyroclastic debris?

• Bombs are also known as lapilli and blocks are known as cinders.

• Bombs are greater than 2mm and blocks are between 3mm and 54 mm.

• Bombs are incandescent lava and blocks are hardened lava.

• Bombs are less than 2 mm and blocks are between 2mm and 64 mm.

Multiple Choice

What type of eruption is being shown?

• none of the choices

• Hawaiian

• Vulcanian

• Strombolian

Multiple Choice

These are eruptions of low viscosity basaltic magma. Gas discharge produces a fire fountain that shoots incandescent lava up to 1 km above the vent.

• none of the choices

Multiple Choice

These eruptions result from a sustained ejection of ________ to ________ magma into eruption columns that may extend up to 45 km above the vent.

• basaltic, andesitic

• andesitic, rhyolitic

• rhyolitic, basaltic

• basaltic, rhyolitic

Multiple Choice

Which of the following shows the Nuèe Ardentes?

• none of the choices

Multiple Choice

Which of the following is a pumice?

• none of the choices

Multiple Choice

Volcanic ash are particles which are less than 2 mm meanwhile volcanic dust are less than _____ mm.

• 0.063

• 0.360

• 0.036

• none of the choices

Multiple Choice

How is scoria different from pumice?

• Pumice are bigger than scoria.

• Pumice are known as little stones while scoria are floating rocks.

• Pumice are lighter color and less dense than scoria.

• all of the choices