Whirlwinds and Eruptions in Volcanoes

The video discusses the ongoing eruption of Iceland's Fagradalsfjall volcano, highlighting the formation of unique 'lava tornadoes' or whirlwinds due to temperature differences. It explains the decreasing eruption rate and the growth of a spatter cone. The video compares the current eruption's duration with past events and considers the potential for rejuvenation. It concludes with a call for viewer interaction.

What is the name of the volcano that erupted in Iceland?

• Fagradalsfjall

• Hekla

• Eyjafjallajökull

• Katla

What unusual phenomenon was observed at the edge of the newly formed lava field?

• Lava lakes

• Lava geysers

• Lava tornadoes

• Lava fountains

What is the primary cause of whirlwinds in volcanic eruptions?

• Heavy rainfall

• High wind speeds

• Earthquakes

• Upward rotating columns of hot air

What temperature difference contributed to the formation of whirlwinds in this eruption?

• 10°C and 1000°C

• 5°C and 1200°C

• 5°C and 500°C

• 0°C and 800°C

What is the primary reason for the exclusion zone around the lava flows?

• To protect wildlife

• To keep people safe from potential hazards

• To prevent theft of lava rocks

• To monitor the lava flow more accurately

What is the estimated height of the spatter cone formed during the eruption?

• 50 meters

• 35 meters

• 45 meters

• 20 meters

How much lava has been produced by the eruption so far?

• 14 million cubic meters

• 12 million cubic meters

• 10 million cubic meters

• 16 million cubic meters

What is the current rate of molten rock ejection from the primary vent?

• 6 cubic meters per second

• 5 cubic meters per second

• 4 cubic meters per second

• 7 cubic meters per second

How long did the 2022 eruption in the Meradalir valley last?

• 10 days

• 50 days

• 19 days

• 30 days

What is a good indication that the current eruption might last longer?

• More frequent earthquakes

• Decreased lava production per second

• Higher wind speeds

• Increased lava production per second