Name: ______

Electromagnetic Spectrum & Light - Webquest

Instructions: 1. Go to SCS home page Jr./Sr. High Library (right side) Teacher Projects Malone Electromagnetic spectrum

First watch the video on the first link to get an overview.

Click on the second link : Imagine the Universe Science Astronomer’s Tool Box electromagnetic spectrum.

Electromagnetic Spectrum : For # 1—5 answer the following questions: (Hint: Use your mouse to hover over the word to get the needed information)

1.  What is the electromagnetic spectrum?

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2.  What is radiation?

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3. While at the website, hover over each of the following words and write what comes up in the box to describe each:

a. visible light ______

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b. microwaves ______

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c. gamma-rays ______

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d. infrared ______

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e. ultraviolet light ______

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f. X-rays ______

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g. radio waves ______

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4.  What is the order of the electromagnetic spectrum from highest to lowest energy? (see diagram on same site)

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Waves

Use the visual below to answer question 5.

(a) Longer wavelength; (b) shorter wavelength

5. Which has more energy, A or B? Explain your reasoning. ______

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6. Define a wavelength. (Hover over hi-lighted word in caption of diagram)

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7. What is a frequency of a wavelength? ( go to Resources dictionary on same site)

Visible Light

(Same site; For questions 8-10; hover over visible light , or see Electromagnetic spectrum drawing)

8. What makes each color of visible light different?

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9. What makes up white light? ______

10. For visible light (ROYGBIV), which has the shortest wavelength? Which has the longest? Place all the other colors in order based on their wavelength, from shortest to longest.

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11. What determines the color of an object we see? What happens to all other colors?

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Electromagnetic Spectrum to size

12. What kind of electromagnetic radiation has the shortest wavelength? ______The longest?______(Science tool box electromagnetic spectrum)

For # 13 – 15: ( Go back to the Library Page, Click 4th link in teacher project: Electromagnetic Spectrum)

13. What kind of electromagnetic radiation could be used to “see” molecules? A cold virus?

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14. Why can’t you use visible light to “see” molecules?

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15. Some insects, like bees can see light of shorter wavelengths than humans can see. What kind of radiation do you think a bee sees?

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(adapted from NASA)

Go to the 5th link on the page and do the interactive lab. Follow the instructions on the page and print off your journal, when completed, to turn in with this packet.