Nonviolent eruptions characterized by extensive flows of basaltic lava are termed ________.
A)pyroclastic
B)effusive
C)explosive
D)plinian

Question

Quizplus · Accepted Answer

Effusive eruptions are nonviolent and characterized by extensive flows of basaltic lava, which slowly moves down the slope due to its low viscosity. Pyroclastic eruptions are violent and characterized by the ejection of hot ash, lava fragments, and gases. Explosive eruptions are also violent and characterized by the ejection of pyroclastic material, such as ash and tephra. Plinian eruptions are the most explosive and characterized by the eruption column that can reach several tens of kilometers in height.

Nonviolent Eruptions Characterized by Extensive Flows of Basaltic Lava Are