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In this activity, learners actually feel the difference in energy required to light two different types of light bulbs: incandescent light and LEDs. Learners will use a generator (hand crank) to provide the power and observe that the bulbs are equally bright. They will be surprised to learn that incandescent bulbs require more energy. This is a hands-on activity that works best if learners experience cranking the generator themselves, and works well at a learning station or center. This activity can be incorporated into a lesson on energy efficiency and/or used during winter holidays since it uses holiday lights.
- Under 5 minutes
- 5 to 10 minutes
- $5 - $10 per group of students
- Ages 8 - 14
- Activity, Lesson/Lesson Plan
- English
Quick Guide
Materials List (per group of students)
- 1 hand generator
- 2 alligator clip leads, 1 black and 1 red
- 1 cluster of 6 white LED Christmas tree lights
- 1 cluster of 6 clear incandescent Christmas tree lights
- Infrared goggles (optional)
Subjects
-
Engineering and Technology
- Technology
-
Physical Sciences
- Electricity and Magnetism
- Energy
-
Vibration and Waves
- Light and Optics
-
Light and Optics
- Electromagnetic Spectrum
-
The Nature of Science
-
The Scientific Process
- Conducting Investigations
- Formulating Explanations
-
The Scientific Process
-
The Nature of Technology
- Technology and Society
Audience
To use this activity, learners need to:
- see
- touch
Learning styles supported:
- Involves hands-on or lab activities
Other
Components that are part of this resource:
This resource is part of:
Access Rights:
- Free access
By:
Rights:
- All rights reserved, Little Shop of Physics, 2009