| Question 1: Hypernovas have never been observed; however, a hypernova may have been the cause of the ________. | |||
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| Question 2: Many religions, such as ________, Islam, and Zoroastrianism include beliefs pertaining to the end of time. | |||
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| Question 3: The Svalbard Global Seed Vault is a vault buried 400 feet inside a mountain in the ________ with over ten tonnes of seeds from all over the world. | |||
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| Question 4: A gamma ray burst or other devastating blast of ________. | |||
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| Question 5: A close approach of a ________ to the solar system. | |||
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| Question 6: The solar system passing through a ________ cloud, leading to a severe global climate change. | |||
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| Question 7: A drastic and unusual decrease or increase in ________'s power output; a solar superstorm leading to partial/complete electrical/technological death of human civilization. | |||
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| Question 8: Evidence for this theory includes a sedimentary layer of iridium in the geological record and a large crater in the area of Chicxulub, ________. | |||
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| Question 9: A geological event such as massive flood basalt, volcanism, or the eruption of a supervolcano[8] leading to the so called ________. | |||
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| Question 10: Severe ________ due to any or a combination of the above mentioned events. | |||
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