Mafic lava is composed mostly of:
A) magnesium and silica
B) silica and iron
C) magnesium and iron
D) silica
Correct Answer:
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Q1: Which of the following characteristics are consistent
Q2: A fracture in rock along which movement
Q3: The Hawaiian Islands and Emperor Seamounts represent
Q4: Basaltic lavas differ from felsic lavas in
Q6: The steep slopes and high eruptive potential
Q7: Globally, most active volcanoes are located along:
A)subduction
Q8: Hot-spot volcanoes can:
A)rise up from the ocean
Q9: The Richter scale is used to express
Q10: Explosive or voluminous eruptions may cause the
Q11: The figure below illustrates what type of
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