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Scientists at Work(9 min 15 sec) Prehistoric extinction rates are calculated from fossil data in a paleodatabase and compared to today’s extinction rate.
ActivitiesA lesson in which students analyze graphs and data on pollen grains and fern spores to form a picture of the living landscape before and after the K-T mass extinction.
ActivitiesA lesson in which students calculate the mass, size, and kinetic energy of the K-T asteroid based on the total abundance of iridium in the K-T boundary layer.
ActivitiesA hands-on activity in which students see first-hand the difference in foraminifera fossils below and above the K-T boundary. Also available in Spanish.
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