Mount Semeru eruption causes explained

The catastrophic eruption at Mount Simaru on December 6th resulted in deadly ash, lava, and mud flows, causing 22 fatalities. Mount Simaru, one of Indonesia's most active volcanoes, experienced instability due to accumulated material and persistent rain, leading to a lava dome collapse. This released an ash plume 15 km high and pyroclastic flows that moved towards the southeastern slope, forming mud flows in the Kobokan River valley.

What was the immediate consequence of the Mount Simaru eruption on December 6th?

• A significant drop in temperature

• The formation of a new island

• The death of 22 people

• A decrease in volcanic activity

What factor contributed to the instability of Mount Simaru's crater?

• A sudden earthquake

• Frequent small explosions

• Human activities

• A volcanic eruption on a nearby island

What natural event led to the collapse of the lava dome at Mount Simaru?

• Persistent rain

• A landslide

• A strong windstorm

• An earthquake

How far did the hot clouds of rocky material travel from the peak of Mount Simaru?

• 6 kilometers

• 2 kilometers

• 8 kilometers

• 4 kilometers

What did the hot clouds of rocky material interact with to form mudflows?

• Lava

• River water

• Ash

• Volcanic gas