Impacts of Volcanic Activity (AQA A-Level Geography): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What does each increase in VEI number represent?
What does each increase in VEI number represent?
Tenfold increase in erupted material
What maximum speed can pyroclastic flows reach?
What maximum speed can pyroclastic flows reach?
700 km per hour
What happens when lava is highly viscous?
What happens when lava is highly viscous?
Gases become trapped, causing explosions
What are lahars composed of?
What are lahars composed of?
Unconsolidated ash mixed with water
How many people died in the Nevado del Ruiz lahar disaster in 1985?
How many people died in the Nevado del Ruiz lahar disaster in 1985?
Approximately 23,000
What does tephra refer to?
What does tephra refer to?
Solid material from volcanic bombs to ash
Which of these is a secondary effect of volcanic eruptions?
Which of these is a secondary effect of volcanic eruptions?
Lahars
What climatic event followed the 1815 Tambora eruption?
What climatic event followed the 1815 Tambora eruption?
Year Without a Summer in 1816
Which gases indicate increased volcanic activity during monitoring?
Which gases indicate increased volcanic activity during monitoring?
Sulphur dioxide and carbon dioxide
What was the volume of the Mount St Helens landslide in 1980?
What was the volume of the Mount St Helens landslide in 1980?
2.5 km³