Exam 5: The Wrath of Vulcan: Volcanic Eruptions

A fast-moving flow consisting of a mixture of water and volcaniclastic debris is called a ____________.

In 79 C.E.,the citizens of Pompeii in the Roman Empire were buried by pyroclastic debris derived from an eruption of ____________.

Common volcanic gases include ____________.

Mt.Fuji in Japan is an example of a ____________.

Whether an eruption will primarily produce lava flows or pyroclastic debris is influenced by the ____________.

At continental rifts,vast bodies of basaltic lava flow forth from fissures,forming ____________.

Large-scale volcanic eruptions can cause a drop in global temperatures.

Basaltic lavas that solidify at their surface (before ceasing to flow)fracture irregularly,producing a sharp-surfaced lava rock named ____________.

Why do the plumes of ash above an erupting volcano rise to stratospheric heights?

Olympus Mons,the largest known volcano in the solar system,is an example of a _____________.

Of the three primary forms of subaerial volcanoes,____________ cover the largest areas.

Olympus Mons,the largest known volcano in the solar system,is found on ___________.

Iceland rises above the Atlantic Ocean as a result of ____________.

Volcanic bombs are ____________.

One of the reasons volcanic eruptions are so deadly is that there is no way to predict where an eruption will occur in the near future.

Explosive or voluminous eruptions may cause the volcano to collapse into the (now empty)magma chamber,producing a broad depression termed a ____________.

What is the importance of volcanism to our Earth system?

Mt.St.Helens killed a geologist studying the volcano because ____________.

Hawaiian-style effusive eruptions are a greater threat to property than to human life.

The difference between tephra and tuff is that ____________.