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Geology Exam: Match The Following! Trivia Quiz 30

Geology Exam: Match The Following! Trivia Quiz 30

Geology Exam: Match The Following! Trivia Quiz

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Quiz Questions And Answers

Which type of basaltic lava flow has a fairly smooth, unfragmented, ropy surface?

Pegmatitic
Paheohoe
Scoria

magma is the most abundant type of erupted at oceanic spreading centers.

Basaltic
Andesitic
Pegmatitic

Why would a plume of solid silicate rock rising slowly from deep in the mantle begin melting as it neared the base of the lithosphere?

The rock heats up and expands at lower pressures, causing it to liquefy
Temperatures remain high as lowered pressures decrease melting temperatures.
magma is the most abundant type of erupted at oceanic spreading centers.

are usually the most abundant gasses emitted during basaltic volcanism.

Neon and ammonia
Oxygen and nitrogen
Water and carbon dioxide

Which one of the following statements is not true?

Melting temperatures of silicate rocks are lowered by small amounts of water
Basalt magmas in general have higher temperatures than rhyolite magmas
When magma reaches the surface, its dissolved gas content increases

Mount St. Helens is

An explosive stratovolcano
A basaltic shield volcano
A small, welded tuff cone

The 1943 eruption of Paricutin in Mexico was characterized by

Mudflows and explosive ash eruptions
Welded-tuff deposition and caldera formation
Cinder cone building and basaltic lava

The recent (geologically) volcanic activity in Yellowstone National Park is

Related to a divergent plate boundary
Related to a transform plate boundary
Related to intraplate, hot spot volcanism

The recent (geologically) volcanic activity in Yellowstone National Park is

Related to a divergent plate boundary
Related to a transform plate boundary
Related to intraplate, hot spot volcanism

What two factors speed up rates of chemical reaction and weathering in rocks and soils?

Low temperatures; very moist
High temperatures; very dry
Warm temperatures; very moist
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