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Tunguska event: Quiz


Question 1: local time)[2][3] on June 30, 1908 (June 17 in the ________, in use locally at the time).
Islamic calendarJulian calendarGregorian calendarChronology

Question 2: Chemical analysis of ________ from the area also revealed numerous anomalies considered consistent with an impact event.
IrelandBogUnited KingdomEngland

Question 3: The region of the bogs showing these anomalous signatures also contains an unusually high proportion of ________, similar to the iridium layer found in the K–T boundary.

Question 4: Based on the direction of impact, the exit event would have occurred in the ________, closer than the impact event to the seismic recording stations that collected much of the evidence of the event.
Arctic OceanPacific OceanIndian OceanAtlantic Ocean

Question 5: Ryan, physicists at the ________, proposed that the Tunguska event was caused by a small (around 1017 kg to 1019 kg) black hole passing through the Earth.
Texas Tech UniversityUniversity of FloridaUniversity of Texas at AustinTexas A&M University

Question 6: The nitrogen is believed to have been deposited as ________, a suspected fallout from the explosion.
Air pollutionWater pollutionAcid rainPollution

Question 7: Expeditions sent to the area in the 1950s and 1960s found microscopic silicate and ________ spheres in siftings of the soil.

Question 8: Models published in 1993 suggested that the stony body would have been about 60 metres across, with physical properties somewhere between an ordinary ________ and a carbonaceous chondrite.

Question 9: An explosion of this magnitude is capable of destroying a large ________.
Metropolitan areaMegalopolis (city type)Los AngelesMegacity

Question 10: During the 1990s, Italian researchers extracted ________ from the core of the trees in the area of impact, to examine trapped particles that were present during the 1908 event.

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