How Old Is A Tree?

You'll find everything but the kitchen sink here ... or just a carbon sink. In the activity, pairs or groups of middle school learners go outside and measure a tree's circumference and height to estimate its carbon storage potential and...

Students examine trees and discuss how the environment effected the tree. They also predict what the area look like in fifty years.

In this sunspots and climate change learning exercise, learners use a diagram of a tree stump and its rings to determine the age of the tree. They use sunspot data from the internet and they construct an Excel spreadsheet to compare the...

How do scientists know what the Earth was like in the past? This second installment of a six-part series focuses on paleoclimates and provides an overview of how geologists determine information about past climates using fossil pollen,...

Why do Saturn and the other gas giants have rings? Hank reveals the Roche limit as the cause, the distance within which gas planets would fail to hold together due to their own gravity. At this particular distance, orbiting materials...

You will find a viewer-friendly PowerPoint on the growth rings and other features found in a cross-section of a tree trunk, affectionately known as a "tree cookie." A few worksheets are provided for practice counting tree rings and a...

Students identify and experiment with dendrochronology (the study of tree rings to answer ecological questions about the recent past) and come up with conclusions as to what possible climatic conditions might affect tree growth in their...

In this trees survival lesson plan, 8th graders discuss what trees need to grow, brainstorm things that could adversely affect tree growth, and compare characteristics of thriving trees vs. surviving trees. Students learn about the trees...

In this tree ring activity, students analyze tree ring samples to determine the age of the tree. They compare them to archived samples and answer questions about the age of the tree and its growth years and abnormal growth years.

In this trees worksheet, students put different kinds of trees into a chart and compare and contrast them. Students then answer percentage problems about the trees and short answer questions. Students complete 7 questions in all.