M02 - Chapter 6 Quiz
Mount Pelée on Martinique is an example of a ________. - ANS-composite volcano
Which type of basaltic lava flow has its surface covered with sharp-edged, angular
blocks and rubble? - ANS-Aa
Most magma tends to have a mafic composition. - ANS-True
The vast majority of Earth's lava is felsic in composition. - ANS-False
Which type of magma is the LEAST likely for form pyroclastics? - ANS-Mafic
The most abundant volatile released during a volcanic eruption is: - ANS-Water Vapor
The Columbia River Basalts in the northwestern US were formed due to surface fissure
eruptions of extremely fluid basaltic lava. - ANS-True
A magma with a high viscosity will move slowly. - ANS-True
Considering the history of Mt. St. Helens and Kilauea volcanoes and your knowledge of
volcano types in different tectonic settings, if you had to live on a volcano, which of the
following would you choose if SAFETY was your only concern? - ANS-Mauna Loa in
Hawaii, on the Big Island of Hawaii near Kilauea
________ magma is the most abundant type of magma erupted on Earth. -
ANS-Basaltic
Which type of magma has the highest eruptive temperature? - ANS-Mafic
Crater Lake in Oregon (the deepest lake in the US) is the result of a summit collapse of
former Mount Mazama. - ANS-True
Most major volcanoes are located within the Ring of Fire around the Pacific plate. -
ANS-True
Which of the following factors help determine whether a volcanic eruption will be violent
or relatively quiet?
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