Exam 9: The Wrath of Vulcan: Volcanic Eruptions

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

As compared to subaerial basaltic lavas,submarine basaltic lavas differ in that they ________.

Pillow lavas are associated with ________.

What properties of the source magma lead to the formation of a shield volcano?

Of the three primary forms of subaerial volcanoes,________ are sometimes referred to as composite volcanoes.

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

Of the three primary forms of subaerial volcanoes,________ have the most gently sloping sides,due to the low viscosity of the basaltic lavas that form them.

The image below shows a ________,which is a large piece of pyroclastic debris ejected during an eruption,with a smooth texture due to the fact that it was partially molten when ejected.

Which U.S.national park is home to a large volcanic caldera formed through a very large explosive eruption 630,000 years ago?

The cloud that rises from the vent of an actively erupting volcano is composed of ________.