Exam 9: The Wrath of Vulcan: Volcanic Eruptions

Columnar joints form when ________.

Pillow lavas are most commonly associated with ________.

Volcanoes have provided some positive benefits to humankind and life in general throughout geologic time.Which of the following is NOT true about volcanoes?

If a volcano was actively releasing a large amount of volcanic gas and then abruptly stopped,what might happen to the volcano in the near future?

The image below shows a lava dome in Panum Crater,California.What is the most likely composition of the rocks that make up this lava dome?

List and describe two volcanic hazards,including both a description of the hazard and the possible effects of the hazard.

Describe the difference between the relative viscosity of felsic versus mafic magma and how this affects the rate of flow of each type.

What is a caldera? How is a caldera different from a stratovolcano?

The Hawaiian island chain is an example of a(n)________.

What was unusual about the 1986 volcano-related disaster near Lake Nyos in Cameroon?

Which of the following is NOT true? Hot-spot volcanoes ________.

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

The average time between eruptions is called a(n)________.

Olympus Mons,the largest known volcano in our Solar System,is an example of a ________.

Basaltic lavas ________.

Of the three primary forms of subaerial volcanoes,________ are large cone-shaped mountains that consist of alternating layers of tephra and solidified lava.

A fast-moving wet slurry consisting of a mixture of water and volcaniclastic debris is termed a ________.

Volcanic bombs are ________.

The Columbia River Plateau is an example of a ________.

The textural term for a basaltic lava flow that has a smooth,ropy appearance is ________.