Why study tree rings? part of TREX - Tree Ring Expeditions:TREX for Students
It certainly isn't obvious why looking at a cross section of a tree after it has been cut down might be useful to observe and analyze its pattern of tree rings. And yet scientists have discovered that the ...

Educator Guide: Lab 3 - Tree Rings and the Ancestral People of Pueblo Bonito: Uncovering the Past part of TREX - Tree Ring Expeditions:TREX Guides
View the Student Lab » NOTE: To get access to the Answer Keys for the TREX labs, you will need to 'Request Instructor Access' using the the tab in the navigation menu on the left side ...

Lab 3 - Tree Rings and the Ancestral People of Pueblo Bonito: Uncovering the Past part of TREX - Tree Ring Expeditions:TREX for Students:Labs
Download a Student Activity Worksheet here. (Microsoft Word 2007 (.docx) 64kB Mar14 19) Introduction In this tree-ring science expedition you will learn how tree rings are used to date archaeological sites. You ...

Educator Guide Lab 4: Sharing a River: The Colorado River Story part of TREX - Tree Ring Expeditions:TREX Guides
View the Student Lab » NOTE: To get access to the Answer Keys for the TREX labs, you will need to 'Request Instructor Access' using the the tab in the navigation menu on the left side of this page. This ...

Part 3 - Understanding Long-term Streamflow Using Tree-Ring Science part of TREX - Tree Ring Expeditions:TREX for Students:Labs
Much of what we know about global and regional climate on long-term time scales comes from proxy data is a past climate record like tree rings and ice cores used to interpret paleoclimate. Recorded meteorological ...

Part 3: Measuring and Graphing Tree-Ring Width at Chaco Canyon, NM. part of TREX - Tree Ring Expeditions:TREX for Students:Labs
In addition to calendar dating ancient archeological sites, and more recent antiques and musical instruments like violins, tree rings capture a wealth of information regarding past temperature and precipitation in ...

Part 3 - Gathering Historical Drought Data part of TREX - Tree Ring Expeditions:TREX for Students:Labs
Download a Student Activity Worksheet here. (Microsoft Word 2007 (.docx) 24kB Feb24 22) Although it may seem a simple matter to measure and analyze tree rings, there are several natural conditions and factors that ...

Educator Guide: Lab 5 - Warming in the Boreal Forests part of TREX - Tree Ring Expeditions:TREX Guides
View the Student Lab » NOTE: To get access to the Answer Keys for the TREX labs, you will need to 'Request Instructor Access' using the the tab in the navigation menu on the left side of this page. This ...

Educator Guide: Lab 2 - Humpty Dumpty and Drought in the Hudson Valley, NY part of TREX - Tree Ring Expeditions:TREX Guides
View the Student Lab » NOTE: To get access to the Answer Keys for the TREX labs, you will need to 'Request Instructor Access' using the the tab in the navigation menu on the left side of this page. This ...

Part 1 - What is Dendrochronology? part of TREX - Tree Ring Expeditions:TREX for Students:Labs
A Brief History In the late 1800s and early 1900s, Andrew. E. Douglass founded the science of dendrochronology— the technique of dating events, environmental change, and archaeological artifacts by using the ...