The document summarizes information about two volcanic eruptions: Pompeii and Mount Pinatubo. For Pompeii, it describes how the eruption was caused by a tear in the African tectonic plate that allowed magma to rise. It killed an estimated 20,000 people within 13 miles and destroyed properties. Society slowly recovered as Pompeii became a tourist site. For Mount Pinatubo, a series of earthquakes led to its 1991 eruption, the largest of the 20th century. It killed 847 people directly and more from disease, displaced over 1 million, and caused extensive economic damages. Recovery took decades as infrastructure was rebuilt.

9. How would it affect us?

11. What caused it?
 What scientists detected was a tear in the African
plate. That allows heat from Earth’s mantle layer melt
the rock of the African plate. The plate build’s up
pressure and causes explosive eruptions. Mt. Vesuvius
has had a 20 year eruption cycle. But the last serious
eruption was in 1947.

12. What effects did it have on society?
 Most people died in a statue form. The air burned their
lungs and contracted and quickly turned in to statues,
that are still preserved today. An estimated 20,000
people died.

13. How far did it affect?
 13 miles away did lava and ash spray all the way to
Herculaneum and a little near Naples. It destroyed all
of their properties and buildings.

14. How did society recover?
 Pompeii was slowly recovering from a major
earthquake that rocked the city in February of A.D. 62.
The shallow quake of Pompeii has now been turned
into a tourist site for everyone.

15. Before and After Pompeii Volcano

16. Pompeii Volcano

18. What caused it?
 A series of earthquakes that lasted over two weeks
caused Mount Pinatubo to erupt. The eruption
occurred on June 15, 1991 and it was considered to be
the largest volcanic eruption on the 20th century. The
effects of the eruption were felt worldwide.

19. What effects did it have on society?
 847 People Killed - 300 from collapsing roofs , 100




from the mud flows known as lahars, the rest
from disease in the evacuation centers including
measles.
•650,000 workers lost jobs
•$700 Million Damages
•1.2million people lost homes
Electricity went off, water was contaminated, road
links were destroyed, and telephone links were
cut.

20. How far did it affect?
 On March 15, 1991, a succession of earthquakes was felt
by villagers on the north-western side of the volcano.
Further earthquakes of increasing intensity were felt
over the next two weeks, and it became clear some
kind of volcanic activity was imminent. On April 2, the
volcano awoke, with prelatic eruptions occurring near
the summit along a 1.5 km long fissure. Over the next
few weeks, small eruptions continued, dusting the
surrounding areas with ash. Seismographs recorded
hundreds of small earthquakes every day.

21. How did society recover?
 Two decades after the eruption of Mount Pinatubo, the
Aetas remain in need of help. They started rebuilding
their buildings. The affect still remains today.

22. Before the Eruption
After the Eruption

24. How could it happen?
 A volcano is a week spot in the crust where molten
material or magma reaches the surface. Magma is a
mixture of rock-forming substances, gases, and water
from the mantle. When magma reaches the surface it
turns to lava and spews out.

25. What effects would it have on society?
 Some of the effects are good and bad. The bad would
be houses, buildings, roads, and fields would be
covered with ash and burned down. Lots of people
would die because if you breathe in the ash, smoke,
and if lava consumes you of any of your body.

26. How far would it affect?
 The effect of an eruption, would effect nearby cities
but nothing to bad. Atmospheric conditions may carry
ash away from the city or top a graphic may direct
lahars and pyroclastic flows to unpopulated areas.

27. What recommendations would you
give for recovery?
 Sweep up as much ash as possible. Have people pick up
debris, and rebuild houses and building, and help each
other out.