Computers are used to detect possible patterns and cycles from these sources.

In dendrochronology, large databases allow scientists to compare the ring records of many trees, construct maps of former regional climates, and reveal when, where, and how quickly the climates changed.

These methods also make highly localized analyses possible.

tree ring dating worksheet-62

These historical records are extremely valuable as we struggle to understand the extent and nature of any possible future climate change.

In this activity, students will use pre-marked paper strips to simulate tree-ring core samples.

They'll count all of the rings from the oldest samples as they are aligned with the younger samples to determine the total amount of time represented by the rings.

They should count aligned rings that appear on several samples only once.

Modified with permission from Global Change: Time and Cycles, Department of the Interior, U. Students will be able to recognize the direct impact of climate on annual tree growth patterns.

In this activity, students will use pre-marked paper strips to simulate tree-ring core samples to help them understand that data for past climate changes can be gathered from sources beyond long-term weather observations.They'll work in groups to reconstruct a 50-year climatic history.Learning Goals Procedure Overview The graphic below shows how the Sample 1 and Sample 2 strips can be aligned.This pattern, which can be graphed, is the type of pattern scientists might look for when studying climate change.kit #52 Students develop a basic knowledge of dendrochronology using the specially designed simulated tree cores in this engaging kit.Modern dendrochronologists seldom cut down a tree to analyze its rings.