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Details

Type of Product:	Science Object
Average Rating:	based on 4 reviews
Pages:	0
Grade Level:	Elementary School, Middle School

Description

Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the third of four Science Objects in the Nature of Light SciPack. It provides conceptual and real world understanding of how the wavelengths of electromagnetic radiation affect the way they interact with different materials. We perceive differences of wavelength within the visible part of the spectrum as differences in color. Shorter wavelengths of light (blue) are scattered more by air molecules than longer wavelengths of light (red). When the atmosphere scatters sunlight—which is a mixture of all wavelengths—short-wavelength light (which gives us the sensation of blue) is scattered much more by air molecules than long-wavelength (red) light is. The atmosphere, therefore, appears blue and the sun seen through it by un-scattered light appears reddened. Also, materials that allow one range of wavelengths to pass through them may completely absorb others. For example, some gases in the atmosphere, including carbon dioxide and water vapor, are transparent to much of the incoming sunlight but absorb the infrared radiation from the warmed surface of Earth.

Customer Reviews

	Light and Color
	Reviewed by: James Johnson (Custer City, PA) on January 27, 2013
	I had forgotten how straightforward and easy to use the Science Objects are. I like the immediate feedback on the questions and the explanations. Also, you can jump around and do the activities out of order if you wish. Like to use these in my science classes.

	Wow....A Rainbow
	Reviewed by: Lorrie Armfield (Laurel, MD) on January 31, 2012
	Light and Color provides an intricate look at the visual spectrum. This Science Object does an excellent job of taking a 'somewhat' complex topic and breaking it down into terms that even the most apprehensive of learners could comprehend. Excellent Job.

	Perfect
	Reviewed by: Brandy Stewart on December 30, 2011
	I loved this Science Object! I couldn't write enough good things about it. This material was presented...perfectly. I was very pleased and very happy I took the time to spend on it!

	Nature of Light-Light and Color
	Reviewed by: Sue Garcia on June 19, 2011
	This Science Object is the third in a series of four lessons about the Nature of Light. This lesson focuses on the colors we perceive by human eyes and why we see them as such. It also talks about the difference between mixing colors of lights as opposed to mixing colors of "paint". I recommend this Object for Middle School and High School teachers.

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