Krakatoa - Weebly · 2018. 9. 9. · Krakatoa was a main island consisting of three overlapping...
Transcript of Krakatoa - Weebly · 2018. 9. 9. · Krakatoa was a main island consisting of three overlapping...
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710 CHAPTER 31
Krakatoa was a main island consisting of
three overlapping volcano cones, plus two
small islands.
After a few months of minor volcanic activity,
Krakatoa blew up violently on August 27, 1883.
KrakatoaImagine an explosion so destructive that it sends volcanic ash 50 miles into the air
and so loud that people hear it about 3,000 miles away. In 1883, the Indonesian
volcano Krakatoa (also spelled Krakatau) erupted in an explosion that created
those effects. But the blast was only the beginning of the disaster. The eruption
caused the volcano to collapse into the sea and triggered a series of deadly
tsunamis, or giant waves. The greatest of those towered 120 feet high. The
tsunami swept the coasts of Java and Sumatra, killing more than 36,000 people.
Krakatoa: The Eruption and the Tsunami
DUST IN THE WIND• Krakatoa threw so much ash and
dust into the air that temperatures
dropped by about 0.9°F around the
world.
• The dust filtered light and caused
spectacular sunsets around the
world for about a year.
• The dust in the atmosphere also
made the moon look shades of
green and blue.
FIVE DEADLIEST VOLCANOESSINCE 1500
1792Unzen, Japan:
15,000 dead
1815Tambora, Indonesia:
92,000 dead
1883Krakatoa, Indonesia:
36,000 dead
1902Mount Pelée, Martinique:
30,000 dead
1985Nevado del Ruiz, Colombia:
25,000 dead
Disasters! 711
PREPARING A NEWSCASTWorking with a partner, use the
Internet to research one of the other
volcanoes listed below. Create a
television newscast about the
disaster.
• Sketch a map showing the volcano
and the region affected by lava,
ash, mud slides, or tsunamis.
• Create drawings, diagrams, or
graphs about the disaster.
• Write a script for the newscast.
In the Sunda Strait, in 1927, lava began to flow through a crack in the sea floor beneath
the site of the old island. By 1928, a new island was born and named Anak Krakatoa,
which means “child of Krakatoa.” The island is still volcanically active, but it is not
considered dangerous.
RESEARCH LINKSCLASSZONE .COM
All three cones disappeared, leaving only a small island. Massive
amounts of sea water were displaced. The disturbance of the ocean
created giant tsunamis. The tsunamis destroyed about 163 villages.