Volcanoes and other Igneous Act

Question 1

Measure of a fluid’s resistance to flow

Answer 1

Viscosity

Question 2

Gasesous components of magma dissolved in melt

Answer 2

Volatiles

Question 3

_________ readily vaporized (form a gas) at the surface pressures

Answer 3

Volatiles

Question 4

Buoyant plumes of hot, ash-laden gases that can extend thousands of meters into the atmosphere

Answer 4

Eruption Column

Question 5

A type of lava flow that has a jagged, blocky surface

Answer 5

Aa Flow

Question 6

A lava flow with a smooth-to-ropey surface

Answer 6

Pahoehoe Flow

Question 7

A tunnel in hardened lava that acts as a horizontal conduit for lava fowing from a volcanic vent

Answer 7

Lava Tube

Question 8

____________ allow fluid lavas to advance great distances

Answer 8

Lava tubes

Question 9

Basaltic lava that solidifies in an underwater environment and develops a structure that resembles a pile of pillows

Answer 9

Pillow Lava

Question 10

The volcanic rock ejected during an eruption, including ash, bombs and blocks

Answer 10

Pyroclastic Materials

Question 11

Hardened lava that has retained the vesicles produced by escaping gases

Answer 11

Scoria

Question 12

A light-colored, extermely porous igneous rock that forms during explosive volcanic eruptions

Answer 12

Pumice