Volcanic bombs are ________.
A) large pyroclastic fragments that acquire streamlined,polished surfaces in flight
B) explosive bodies of lava with high volatile content
C) volcanic fragments that were already solid rock before being ejected during an eruption
D) used by geologists to set off small eruptions in volcanoes that are deemed potentially dangerous

Question

Quizplus · Accepted Answer

Volcanic bombs are large pyroclastic fragments that are ejected during an eruption and acquire streamlined, polished surfaces in flight. They can range in size from a few centimeters to several meters and are often still partially molten when they fall to the ground. Option B is incorrect because explosive bodies of lava with high volatile content are called "pyroclastic flows." Option C is incorrect because this describes "block" fragments, not bombs. Option D is incorrect because geologists do not use bombs to trigger small eruptions.

Volcanic Bombs Are ________