The GLAS Is Half Full: Satellites and Changing Tropical Forests
The scientists wanted to know if the information gathered by satellites was as good as the information they would get if they gathered it in person. The scientists in this study wanted to discover whether information gathered by satellites could be used to identify the age of tropical rain forests and to estimate the increase in the amount of biomass in growing rain forests. They also wanted to know if information gathered by satellites could be used to estimate the amount of biomass held by old rain forests.
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The question you will answer in this FACTivity is: How can a series of Landsat images help scientists estimate a forest’s age over time?FACTivity – The GLAS Is Half Full
The question you will answer in this FACTivity is: How can a series of Landsat images help scientists estimate a forest’s age over time?
Glossary
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Dar Roberts
My favorite science experience was climbing a 44-meter tall tower to access tree canopies. I had a $70,000 instrument strapped on me to measure how light changes from the ground...View Profile -
Eileen Helmer
I have two favorite science experiences. The first was collecting field data on horseback in Costa Rica after a hurricane caused landslides that blocked most of the roads. The second...View Profile
Standards addressed in this Article:
Social Studies Standards
- People, Places, and Environments
- Science, Technology, and Society
- Time, Continuity, and Change
Note To Educators
The Forest Service's Mission
The Forest Service’s mission is to sustain the health, diversity, and productivity of the Nation’s forests and grasslands to meet the needs of present and future generations. For more than 100 years, our motto has been “caring for the land and serving people.” The Forest Service, an agency of the U.S. Department of Agriculture (USDA), recognizes its responsibility to be engaged in efforts to connect youth to nature and to promote the development of science-based conservation education programs and materials nationwide.
What Is the Natural Inquirer?
Natural Inquirer is a science education resource journal to be used by students in grade 6 and up. Natural Inquirer contains articles describing environmental and natural resource research conducted by Forest Service scientists and their cooperators. These scientific journal articles have been reformatted to meet the needs of middle school students. The articles are easy to understand, are aesthetically pleasing to the eye, contain glossaries, and include hands-on activities. The goal of Natural Inquirer is to stimulate critical reading and thinking about scientific inquiry and investigation while teaching about ecology, the natural environment, and natural resources.
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Meet the Scientists
Introduces students to the scientists who did the research. This section may be used in a discussion about careers in science.
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What Kinds of Scientist Did This Research?
Introduces students to the scientific disciplines of the scientists who conducted the research.
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Thinking About Science
Introduces something new about the scientific process, such as a scientific habit of mind or procedures used in scientific studies.
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Thinking About the Environment
Introduces the environmental topic being addressed in the research.
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Introduction
Introduces the problem or question that the research addresses.
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Method
Describes the method the scientists used to collect and analyze their data.
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Findings & Discussion
Describes the results of the analysis. Addresses the findings and places them into the context of the original problem or question.
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Reflection Section
Presents questions aimed at stimulating critical thinking about what has been read or predicting what might be presented in the next section. These questions are placed at the end of each of the main article sections.
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Number Crunches
Presents an easy math problem related to the research.
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Glossary
Defines potentially new scientific or other terms to students. The first occurrence of a glossary word is bold in the text.
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Citation
Gives the original article citation with an internet link to the original article.
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FACTivity
Presents a hands-on activity that emphasizes something presented in the article.
Science Education Standards
You will find a listing of education standards which are addressed by each article at the back of each publication and on our website.
We Welcome Feedback
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Contact
Jessica Nickelsen
Director, Natural Inquirer program -
Email
Lessons
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Give each student or group a copy of the THIEVES chart reproduced at the end of the lesson plan PDF. You may either write the questions on the board, or...Lesson Plan – THIEVES Chart Guided Reading
Give each student or group a copy of the THIEVES chart reproduced at the end of the lesson plan PDF. You may either write the questions on the board, or...