1. 96 Electromagnetic Spectrum

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3. 96 Electromagnetic Spectrum Key Vocabulary absorption electromagnetic spectrum electromagnetic wave infrared reflection transmission ultraviolet

4. 96 Electromagnetic Spectrum Are there invisible forms of energy in sunlight? Record your answer in your notebook and share your evidence.

5. 96 Electromagnetic Spectrum Complete the “Before” column of student sheet 96.1, “Anticipation Guide: The Electromagnetic Spectrum”

6. 96 Electromagnetic Spectrum Read the introduction and look for key ideas Herschel’s Experiment

7. 96 Electromagnetic Spectrum What are the characteristics of electromagnetic waves?

8. 96 Electromagnetic Spectrum Complete the reading

9. 96 Electromagnetic Spectrum Sir Frederick William Herschel What would the result of the experiment have been if Herschel had not used a control? Share your thoughts with the class.

10. 96 Electromagnetic Spectrum The Electromagnetic Spectrum

11. 96 Electromagnetic Spectrum Complete the “After” column of student sheet 96.1, “Anticipation Guide: The Electromagnetic Spectrum”

12. 96 Electromagnetic Spectrum Analysis question 1 With what evidence did Herschel support his discovery of infrared waves?

13. 96 Electromagnetic Spectrum Analysis question 2 With what evidence did Ritter support his discovery of ultraviolet waves?

14. 96 Electromagnetic Spectrum Analysis question 3 Compare infrared and ultraviolet. In what ways are they similar? In what ways are they different?

15. 96 Electromagnetic Spectrum Analysis question 4 From the following list, choose the one that describes the portion of the range of electromagnetic waves that is visible. a. More than ½ b. about ½ c. ¼ - ½ d. ₁ ⁄ ₁₀ – ¼ e. much less than ₁ ⁄ ₁₀ Explain your reasoning, citing evidence from this activity.

16. 96 Electromagnetic Spectrum Analysis question 5 Is it likely that light frequencies higher than ultraviolet were the main cause of Tia Ana’s cataracts? Explain why or why not.

17. 96 Electromagnetic Spectrum What are the characteristics of electromagnetic waves? X-rays are part of the electromagnetic spectrum.

18. 96 Electromagnetic Spectrum Key vocabulary definitions Absorption - The process of taking in or taking up. Electromagnetic spectrum - The range of electromagnetic waves that vary from high- frequency gamma rays to low-frequency radio waves.

19. 96 Electromagnetic Spectrum Key vocabulary definitions Electromagnetic wave - A transverse wave that involves disturbances in electric and magnetic fields that are perpendicular to each other. Electromagnetic waves can travel through media and through a vacuum. Infrared - Electromagnetic radiation that has a wavelength longer than visible light but shorter than microwaves.

20. 96 Electromagnetic Spectrum Key vocabulary definitions Reflection - The light that is bounced off of an object or material. Transmission - The act of energy passing through a medium. Ultraviolet - Electromagnetic radiation that has a wavelength shorter than visible light but longer than X-rays.