Tree ring dating kit
Tree ring dating kit
Orienteering Bin: This bin contains compasses and directions for setting up a game to help your class learn compass basics.
Tree ID and Forest Measurement Bin Materials include measuring tapes, tangent tree height guides, tree ring dating kit, box of tree cookies, clinometers, and calculators.Rockies Trees and Wildflowers Pocket Guide Idaho Birds Pocket Guide Weather Pocket Guide Pond Life Pocket Guide Rocky Mountain Tree Finder Pocket Guide Peterson First Guide to Butterflies and Moths Peterson First Guide to Reptiles and Amphibians Peterson First Guide to Insects Peterson First Guide to Birds Trees of Idaho These handy fact sheets cover the basics of a variety of environmental topics.Use them to brush up on some ecology for a unit you are teaching or to be better informed for that next public meeting.Each sheet includes a list of references for more in-depth study.Click a topic below to download the pdf Fact Sheet.With fall coming to a close, there is no better time to talk about tree rings and their use in archaeology.
You probably know that trees have rings, which you can see and count when you look at a stump after a tree has been cut, but did you know that the rings of a tree let you know how old it is?Tree ring dating allows archaeologists to date when a tree was cut. Douglass was an astronomer that worked at archaeological sites in the Southwestern United States. Soon, with the rise of computers and statistical methods, scientists, like archaeologists, were able to create long series of tree ring dates that could be used to help figure out how old things are.The method was developed in the early 20 century by A. Dendrochronology, or tree ring dating, examines the rings produced by trees each year.The thickness of the ring changes each year based on the growing season, changes in the climate in the weather, illnesses, and things like that.For example, if there is a drought in the area the tree might produce a very narrow ring, but if it is warm and sunny, with just enough rain, the ring might be thicker.The size of the rings can also depend on the age of the tree, because as a tree gets older it produces narrower rings as well. Dendrochronology has two uses in archaeology: it can be used to calibrate (correct) radiocardon dates, and it can be used to date things all on its own.