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Kids ASK! about Science & Technology

Not all items that have light have heat. It would have to be dependent on the item itself. There is though such a thing called ‘cool light’. As mentioned in the ‘Chemilumiscence’ website, “Many chemical reactions produce both light and heat. A burning candle is such a reaction. When a candle is lit, its flame both glows and becomes hot. It is much less common for a chemical reaction to produce light without heat.

The light from such reactions is called cool light, because it is created without heat. Reactions that produce light without heat are called chemiluminescent reactions. Perhaps the most familiar chemiluminescent reactions are those that occur in living organisms. Fireflies produce light without heat by a chemiluminescent reaction. Chemiluminescent reactions that occur in living organisms are called bioluminescent reactions”.

Source : Chemilum

Source : Funtrivia

Materials available at the library for further information:

Light / by Ian F. Mahaney
Publisher : New York, N.Y. : PowerKids Press, 2007
Call No. : J 535 MAH
Click here for item availability.

All about Light by Monica Halpern
Publisher : Washington, DC : National Geographic, c2006.
Call No. : J 535 HAL
Click here for item availability.

Light : a question and answer book /. by by Adele Richardson
Publisher : Mankato, Minn. : Capstone Press, c2006.
Call No. : J 535 RIC
Click here for item availability.

Light and heat are also forms of ‘energy’. Should you like to read more about ‘energy’, the following sites and books might be useful for you.

Source : Energy Grade 4

Source : What is energy

Source : Energy

Materials available at the library for further information:

Energy by Alvin Silverstein, Virginia Silverstein, Laura Silverstein Nunn
Publisher : Brookfield, Conn. : Twenty-First Century Books, c1998.
Call No. : Y 621.042 SIL
Click here for item availability

Heat & energy / by Steve Parker
Publisher : Oxford : Heinemann Library, 2004.
Call No. : J 536 PAR
Click here for item availability

All Websites are last accessed on 17th July 2007
Answered by Ms Siti Mardiana binte MUSA, Librarian, Children’s Services

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