The exercise they will go through of working backwards from measurements to age should help them understand how scientists use carbon dating to try to determine the age of fossils and other materials.
To be able to do this lesson and understand the idea of half-life, students should understand ratios and the multiplication of fractions, and be somewhat comfortable with probability.
Written below is the case as it appears on The Case of the Melting Ice student sheet.
The Case of the Melting Ice Frosty the Snowman lies melting in the funnels at your lab station.
Students should answer the questions on their student sheet based on their graphs and the data they collected.
Empty the graduated cylinders between classes if the volume is more than about 25 ml.
"Carbon-14 undergoes beta decay with a half-life of 5720 years.
The element carbon is an essential element in all living matter.
For students, understanding the general architecture of the atom and the roles played by the main constituents of the atom in determining the properties of materials now becomes relevant.
Having learned earlier that all the atoms of an element are identical and are different from those of all other elements, students now come up against the idea that, on the contrary, atoms of the same element can differ in important ways. 79.) In this lesson, students will be asked to consider the case of when Frosty the Snowman met his demise (began to melt).