Tree ring dating lesson plan
Download this lesson plan Title: Exploring Tree Rings Overview: Many trees live long lives.Students discover they can learn about the history of a tree by examining its rings.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).If you cut horizontally into a trunk or branch, you will discover alternating light and dark rings resulting from these different growth rates.The lighter sections indicate periods of rapid growth and thus larger cells; such periods normally occur during the spring and early summer.
They possess a thick layer of waxy covering their leaves to help them conserve water year round.The second lesson, Radioactive Decay: A Sweet Simulation of Half-life, introduces the idea of half-life.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.Thinner rings can signal challenging weather conditions such as drought.Thicker rings can indicate especially favorable growing conditions.
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.