Scales
based on observable earthquake damage
The Mercalli Scale
The 1991 eruption of _____ ______ in the Philippines' Luzon Volcanic Arc was the second-largest volcanic eruption of the 20th century, behind only the 1912 eruption of Novarupta in Alaska.
Mount Pinatubo (1991)
_____ is taller than Mount Everest
Mauna Loa
Third most powerful earthquake
Magma is lighter than the solid rock around it, so it rises. Eventually, some of the magma pushes through _____ creating a volcanic eruption.
Vents
a large active volcano in the western highlands of Guatemala. It is part of the mountain range of the Sierra Madre.
Santa Maria (1902)
Most deadly eruption
Tambora(92000 deaths)
The 5th most powerful earthquake
Kamchatka, Russia 4 November 1952 (magnitude 9.0)
Fragments of lava or rock smaller than 2 mm in size that are blasted into the air by volcanic explosions
measure of an earthquake's magnitude based on its seismic moment (turning effect)
The Moment Magnitude Scale
Beginning on 20 May 1883, and ending on 21 October 1883, the volcanic island located in the Sunda Strait, had repeated, months long volcanic eruptions. The explosion was heard 1,930 mi. This Is the Largest recorded eruption and 3rd largest eruption.
Krakatoa (1883)
Most deadly earthquake
1976 Tangshan earthquake in Hebei China has over 300000 deaths
The fourth most powerful earthquake
Sendai, Japan 11 March 2011 (magnitude 9.0)
Daily Double,
What formed the islands of Hawaii
hotspot
a volcano that was formed in 1912, located on the Alaska Peninsula, and released 30 times the volume of magma of the 1980 eruption of Mount St. Helens.
Novarupta (1912)
An erupting volcano can trigger tsunamis, _____ ______, earthquakes, mudflows and rockfalls.
Fill in the blank
Flash Floods
Valdivia, Chile 22 May 1960 (magnitude 9.5)
a large underground storage area for molten rock
Magma Chamber
a numerical scale for expressing the magnitude of an earthquake on the basis of seismograph oscillations
Richter Scale
a volcano on the island of Sumbawa in present-day Indonesia, which was considered the largest eruption.
Tambora (1815)
____ from volcanoes can spark lightning
ash
the second most powerful earthquake
Prince William Sound, Alaska 28 March 1964 (magnitude 9.2)
a fast-moving, hot, and destructive current of volcanic ash, rock fragments, and gas that erupts from a volcano
Pyroclastic flow