Heat and Light From Machines
Some mechanical and electrical machines not only produce heat, but they also produce light. What are some machines that produce light?
Look at the pictures below. They are all machines that produce heat, but some of them also produce light. Click on the correct button for each picture!
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| Check your answers! Highlight the box below and see how many you got right. | |
| 1. Produces Light, 2. Produces Light, 3. Does NOT Produce Light, 4. Does NOT Produce Light, 5. Produces Light, 6. Produces Light, 7. Does NOT Produce Light | |
Close your eyes and try to think of at least five light producers in your home or classroom. Now open your eyes and look around. How many more can you see? Can you add at least five more to your list? Compare your list with the items below.
In your school:
- Overhead projector
- Television
- Computer
- Aquarium
- Exit sign
- Lights
- Phone
- Calculator
- Sunlight
- Flashlight
At home:
- Refrigerator
- Stove
- Toaster
- Dishwasher
- Microwave
- Television
- Digital clock
- Sunlight
- Computer
- Flashlight
- Car lights
- CD player
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Download the plug-ins: 
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(The QuickTime plug-in is needed to play sounds and movies correctly.)
Want to share photos of you or your friends doing this activity? Send it in an e-mail with the following information: the title of the activity, the URL (Internet address), and your name. Remember no picture can be used that shows a student face or has a student name on it.
Updated
March 1, 2005
by: Glen Westbroek
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