McGraw-Hill Science 2005

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Macmillan/McGraw-Hill Science Grade 5
Grade 5
e-Journal

Refraction of Light

Step 1. Questions

Light bends, or refracts, as it passes from one medium to another. This is why a pencil or straw may appear bent or broken when it sits in a glass of water.

Refraction is also quite useful. The lenses in your eyes use refraction to focus images. If you wear eyeglasses, they refract light to help you see better.

For this e-Journal project, you will report on the refraction of light. Here are some questions to help guide your research.
  • What are some types of lenses? What do they do to light that passes through them?
  • What devices use lenses? What do these devices do?
  • Does Earth’s atmosphere refract sunlight? If so, how?
  • What are the parts of the eye? How do these parts work together to help you see?
  • What questions do you have about the refraction of light and its uses?
Are you ready? Begin by visiting the Web sites listed in Step 2. Write down what you learn in the note-taking boxes. You may also use search engines to research refraction and lenses, or visit the local library.

When you are ready, follow Steps 3 and 4 to write your report.



Step 2. Research

Research answers for the questions you were asked in Step 1. Visit these Web sites. Take notes about them on this page, too!

Optics for Kids
Here is a huge Web site that is all about optics — the study of light. Scroll down the page and click “Lenses” for an in-depth look at how lenses refract light. Or try the other parts of this site.
Take Notes:



Atmospheric Optics
When sunlight enters Earth’s atmosphere, all sorts of things can happen. Visit this Web site to learn about rays, shadows, halos, and rainbows. This fun site comes from Great Britain.
Take Notes:



Vision 101
How does your eye work? Visit this Web site to learn all the details. Note: The site may take up to 30 seconds or so to load onto your machine.
Take Notes:



Go to Step 3 or Save My Notes


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