Which outcome arises from increased magma viscosity in stratovolcanoes?

💡 Explanation

More viscous magma traps gases more effectively therefore increasing pressure, causing explosive eruptions due to gas expansion exceeding the rock's tensile strength, rather than effusive flows which are from less viscous magma.

• Which effect results when wind interacts with Earth's rotation near a deep ocean surface current?
• Which outcome results downstream when extensive levee construction constricts a river?
• Which mechanism causes tsunamis after a megathrust earthquake?
• Which mechanism causes increased ground displacement amplitude further from an earthquake's epicenter in unconsolidated sediments?
• Which outcome occurs when reduced atmospheric pressure differences weaken trade winds?
• Which phenomenon reduces rainfall within the descending air of Hadley cells?