The physics of decay and origin of carbon 14 for the radiocarbon dating1: Formation of Carbon-14.2: Decay of Carbon-14.3: The “equal” equation is for living organisms, and the unequal one is for non-living ones, in which the C-14 then decays (hence the 2).

From: Wikimedia Commons We can indirectly date glacial sediments by looking at the organic materials above and below glacial sediments. Marine geological constraints for the grounding-line position of the Antarctic Ice Sheet on the southern Weddell Sea shelf at the Last Glacial Maximum.

Radiocarbon dating works because an isotope of carbon, C, is constantly formed in the atmosphere by interaction of carbon isotopes with solar radiation and free neutrons.

Living organisms absorb carbon (for example, we breathe it in).

The element carbon is an essential element in all living matter.

Carbon-14 is produced constantly as our atmosphere is bombarded by cosmic rays.

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.

For the laboratory portion of this lesson, you will have to set up the ring stands, rings, funnels, and graduated cylinders.

Fill the funnels with ice before the students arrive in the classroom.

You can continue to fill the funnels as different classes arrive.

By the end of the 8th grade, students should know that all matter is made up of atoms, which are far too small to see directly through a microscope.