Showing 1-4 of 4 Resources
ActivityA 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.
ActivityA worksheet in which students write down the evidence that led to the discovery that an asteroid struck Earth about 66 million years ago, causing a mass extinction. Also available in Spanish.
ActivityA worksheet in which students calculate how much iridium was released, and eventually deposited all over the Earth, by the impact of the asteroid that caused the K-T extinction.
ActivityA lesson in which students analyze the chemical data that led researchers to conclude that the K-T boundary layer contained an extraordinary concentration of iridium.
Narrow your choices by selecting areas below.