Curated OER
Radioactivity
In this radioactivity activity, students write the mass number and atomic number for the missing element in the reactions. Students identify the isotope that is more stable and determine the half-life of the isotope. This activity has 10...
Curated OER
Is there a Lunar Meteorite Hazard?
In this lunar meteorite hazard worksheet, students read about the speed of meteorites that crash into the Moon. Students solve 2 problems including finding the impact rates of the meteorites on the Moon, determining the number of years...
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