VIDEO

Energy Efficiency of Lightbulbs

Watch this brief, video picture of practice that captures everyday classroom life and provides real-life examples of how students learn and think about energy topics.

Grades

3 - 8

Subjects

Earth Science

Lightbulbs offer one of the most basic examples of energy efficiency. Compact fluorescent lightbulbs (CFLs) may use up to 75 percent less energy and last 10 times longer than an incandescent lightbulb. Many students already know that CFL lightbulbs are more environmentally friendly compared to incandescent bulbs, but they may not realize why there is a difference. Conducting a hands-on investigation with both types of bulbs can provide students with a memorable experience that allows them to see firsthand the efficiency difference—through the measurement of temperature change—between the two bulbs.

Watch this video of 4th and 5th grade students in San Diego, California—a working class community. The purpose of this classroom video is to see students investigate lightbulbs and describe what they learn about efficiency.

Credits

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Writers

Lindsey Mohan, Ph.D.

Ivan Salinas, B.S. Chemistry

Marcia S. Matz, M.A. Design

Jose Marcos-Iga, Ph.D. Natural Resources

Nicole D. LaDue, M.A.T. Earth Science Education

Tania T. Hinojosa, M.Ed. Educational Technology

Rachel J. Fisher, M.S. Biology

Designer

Cindy Olson

Editors

Kristen Dell, National Geographic Society

Lindsey Mohan, Ph.D.

Chelsea Zillmer

Educator Reviewers

Catie Boarts, Heal the Bay

Rachel J. Fisher

Meghan E. Marrero, New York State Marine Education Association (NYSMEA)

Marcia S. Matz

other

Last Updated

January 2, 2024

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