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25 Cards in this Set
- Front
- Back
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the largest known floods that we know about have been a result of
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ICE DAM FAILURES
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what type of flood would produce enough water to effect a large area for a long time?
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REGIONAL FLOOD
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fire can release a large amount of stored energy as heat, what kind of energy is stored in trees?
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SOLAR ENERGY
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what percent of wildfires have a human origin?
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85%
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Santa Ana winds in southern CA play a major role in fires. What kind of weather system produces these dry hot winds?
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strong HIGH pressure over Nevada
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a fire storm would be caused when...
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strong winds deliver extra oxygen to the fire
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the phase of combustion that involves preheating and the release of flammable gases is...
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PYROLITIC COMBUSTION
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why have fires in southern CA been so destructive and violent in the last several years?
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fires were not allowed to burn in the past so vegetation had become over thickened
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which of the following could provide a global mechanism and the power to create a mass extinction?
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global warming and release of the entire ocean floor reserves methane hydrate
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Kevin used a __________ in-class to help understand Geologic Time
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ream of printer paper
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when did the largest extinction in Earth history occur?
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the end of the PALEOZOIC
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the major divisions of the geologic time scale are based on...
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THE FOSSIL RECORD
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which of the following would be considered a mass extinction?
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50% of all life on Earth dying due to a supernova
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how big would an asteroid have to be(minimum size) to cause a global mass extinction?
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10 MILES
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what have we named the 65 million year-od K-T boundary crater and where is it located?
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CHIXULUB, MEXICO
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which of the following is true about our understanding of impacts on Earth?
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we fully expect to have impacts HAPPEN in the future
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which of the following statements is true?
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we know a little about when and where a large comet will appear
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what event in human history killed people by radiation from gamma rays?
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the ATOMIC BLAST @ HIROSHIMA
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what is true about the very strongest gamma ray bursts from a hypernova?
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ALL OF THE ABOVE
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what would be the killing effects of GRB hitting Earth from 5000 light years away?
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complete atmosphere destruction, gamma radiation, severe warming
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what is true about the impact of a "rocky" object 100 meters across?
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ALL OF THE ABOVE
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annual meteor showers occur when the Earth collides with...
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the TAIL of a COMET
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the most typical meteorite to discover on Earth is ___________ and the most typical meteoroid in space is ___________.
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METALLIC; STONEY
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which of the following materials would be most likely to explode in the atmosphere?
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100m, icey object, high-angle of incidence
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what is the biggest threat facing the world? (the one we should worry about)
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the worlds POPULATION EXCEEDING the Earth's capacity
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