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WorksheetsKrakatoa Volcano Quiz
Total questions: 18
Worksheet time: 9mins
What is the estimated age of the Earth?
8 billion years
2 billion years
4.5 billion years
6 billion years
What is the name of the deadly volcano that erupted over 100 years ago?
Vesuvius
Krakatoa
Anak Krakatau
Mount St. Helens
Where is Krakatoa located?
Between Java and Sumatra
Between Australia and New Zealand
Between Hawaii and Japan
Between Alaska and Russia
What is the name of the new volcano that has formed in the same spot as Krakatoa?
Anak Krakatau
Krakatoa 2.0
Krakatoa Jr.
Krakatoa Reborn
How fast is Anak Krakatau growing?
5 feet per year
20 feet per year
1 foot per year
12 feet per year
What type of volcano is Krakatoa?
Stratovolcano
Composite volcano
Cinder cone volcano
Shield volcano
What is the danger of sticky lava in stratovolcanoes?
It causes earthquakes
It creates pyroclastic flows
It traps explosive gases
It forms underwater boulders
What triggered the mega explosion of Krakatoa in 1883?
Magma mixing
Pyroclastic flows
Underwater boulders
Earthquakes
How loud was the noise of Krakatoa's explosion in 1883?
Equivalent to 100 megatons of TNT
Equivalent to 250 megatons of TNT
Equivalent to 150 megatons of TNT
Equivalent to 200 megatons of TNT
How far away was the noise of Krakatoa's explosion heard?
2000 miles
1000 miles
500 miles
100 miles
What caused the deaths of over 2,000 people at Ketembang?
Underwater boulders
Gas inhalation
Ash suffocation
Pyroclastic flows
What are the white cliffs on Rakata made of?
Granite
Limestone
Coral
Pumice
What is the estimated height of the pyroclastic flows from Krakatoa?
1000 feet
2800 feet
500 feet
2000 feet
What is the temperature of pyroclastic flows?
100 degrees Celsius
200 degrees Celsius
300 degrees Celsius
Several hundred degrees Celsius
How fast can pyroclastic flows travel?
50 miles per hour
150 miles per hour
100 miles per hour
200 miles per hour
What phenomenon causes the distinctive blue glow sometimes observed at Krakatoa?
Reflection of the sea
Combustion of sulfur gases
Fluorescence of minerals
Incandescence of hot gases
What is the primary composition of the volcanic ash emitted by Krakatoa?
Basaltic
Andesitic
Rhyolitic
Dacitic
During which month did the catastrophic 1883 eruption of Krakatoa occur?
April
June
August
December
