Electromagnetic Waves CHAPTER NEW CHAPTER Electromagnetic Waves the BIG idea Electromagnetic waves transfer energy through radiation. Electromagnetic Waves 17.1 Electromagnetic waves have unique traits. 17.2 Electromagnetic waves have many uses. 17.3 The Sun is the source of most visible light. 17.4 Light waves interact with materials. CHAPTER OUTLINE CHAPTER RESOURCES

17.1 Electromagnetic waves have unique traits. • Electromagnetic (EM) waves are made of vibrating electric and magnetic fields. electromagnetic wave radiation • EM waves travel at the speed of light through a vacuum. • EM waves transfer energy and can interact with matter. VISUALIZATION Learn more about the nature of EM waves. CHAPTER RESOURCES SECTION OUTLINE

Electromagnetic waves have many uses. 17.2 Electromagnetic waves have many uses. EM waves are grouped by frequency on the EM spectrum. EM spectrum radio waves microwaves visible light infrared light ultraviolet light SECTION OUTLINE x-rays gamma rays CHAPTER RESOURCES SECTION OUTLINE

Electromagnetic waves have many uses. 17.2 Electromagnetic waves have many uses. EM waves are grouped by frequency on the EM spectrum. EM spectrum The EM spectrum is divided into: radio waves radio waves microwaves visible light infrared light ultraviolet light Radio Waves Microwaves Infrared Light Visible Light Ultraviolet Light X-rays Gamma Rays Frequency in Hertz (1 hertz = 1 wavelength/second) SECTION OUTLINE x-rays gamma rays CHAPTER RESOURCES SECTION OUTLINE

Electromagnetic waves have many uses. 17.2 Electromagnetic waves have many uses. EM waves are grouped by frequency on the EM spectrum. EM spectrum The EM spectrum is divided into: radio waves radio waves microwaves microwaves visible light infrared light ultraviolet light Radio Waves Microwaves Infrared Light Visible Light Ultraviolet Light X-rays Gamma Rays Frequency in Hertz (1 hertz = 1 wavelength/second) SECTION OUTLINE x-rays gamma rays CHAPTER RESOURCES SECTION OUTLINE

Electromagnetic waves have many uses. 17.2 Electromagnetic waves have many uses. EM waves are grouped by frequency on the EM spectrum. EM spectrum The EM spectrum is divided into: radio waves radio waves microwaves microwaves infrared light visible light infrared light ultraviolet light Radio Waves Microwaves Infrared Light Visible Light Ultraviolet Light X-rays Gamma Rays Frequency in Hertz (1 hertz = 1 wavelength/second) SECTION OUTLINE x-rays gamma rays CHAPTER RESOURCES SECTION OUTLINE

Electromagnetic waves have many uses. 17.2 Electromagnetic waves have many uses. EM waves are grouped by frequency on the EM spectrum. EM spectrum The EM spectrum is divided into: radio waves radio waves microwaves microwaves infrared light visible light visible light infrared light ultraviolet light Radio Waves Microwaves Infrared Light Visible Light Ultraviolet Light X-rays Gamma Rays Frequency in Hertz (1 hertz = 1 wavelength/second) SECTION OUTLINE x-rays gamma rays CHAPTER RESOURCES SECTION OUTLINE

Electromagnetic waves have many uses. 17.2 Electromagnetic waves have many uses. EM waves are grouped by frequency on the EM spectrum. EM spectrum The EM spectrum is divided into: radio waves radio waves ultraviolet light microwaves microwaves infrared light visible light visible light infrared light ultraviolet light Radio Waves Microwaves Infrared Light Visible Light Ultraviolet Light X-rays Gamma Rays Frequency in Hertz (1 hertz = 1 wavelength/second) SECTION OUTLINE x-rays gamma rays CHAPTER RESOURCES SECTION OUTLINE

Electromagnetic waves have many uses. 17.2 Electromagnetic waves have many uses. EM waves are grouped by frequency on the EM spectrum. EM spectrum The EM spectrum is divided into: radio waves radio waves ultraviolet light microwaves microwaves x-rays infrared light visible light visible light infrared light ultraviolet light Radio Waves Microwaves Infrared Light Visible Ultraviolet Light X-rays Gamma Rays Frequency in Hertz (1 hertz = 1 wavelength/second) SECTION OUTLINE x-rays gamma rays CHAPTER RESOURCES SECTION OUTLINE

Electromagnetic waves have many uses. 17.2 Electromagnetic waves have many uses. EM waves are grouped by frequency on the EM spectrum. EM spectrum The EM spectrum is divided into: radio waves radio waves ultraviolet light microwaves microwaves x-rays infrared light gamma rays visible light visible light infrared light ultraviolet light Radio Waves Microwaves Infrared Light Visible Ultraviolet Light X-rays Gamma Rays Frequency in Hertz (1 hertz = 1 wavelength/second) SECTION OUTLINE x-rays gamma rays CHAPTER RESOURCES SECTION OUTLINE

Electromagnetic waves have many uses. 17.2 Electromagnetic waves have many uses. EM waves are grouped by frequency on the EM spectrum. EM spectrum The EM spectrum is divided into: radio waves radio waves ultraviolet light microwaves microwaves x-rays infrared light gamma rays visible light visible light infrared light ultraviolet light SECTION OUTLINE VISUALIZATION Explore images of the Sun based on different wavelengths. CLASSZONE.COM x-rays gamma rays CHAPTER RESOURCES SECTION OUTLINE

The Sun is the source of most visible light. 17.3 The Sun is the source of most visible light. • Most visible light comes from the Sun. incandescence • Many living organisms produce visible light for their own use. luminescence bioluminescence fluorescence CHAPTER RESOURCES SECTION OUTLINE

The Sun is the source of most visible light. 17.3 The Sun is the source of most visible light. • Most visible light comes from the Sun. incandescence • Many living organisms produce visible light for their own use. luminescence • Humans produce visible light artificially. bioluminescence Incandescent Light Bulb Halogen Light Bulb Fluorescent Light Bulb fluorescence CHAPTER RESOURCES SECTION OUTLINE

Light waves interact with materials. 17.4 Light waves interact with materials. • Reflection, transmission, and absorption affect what light we see. transmission absorption • Light can be scattered and polarized. scattering polarization prism primary colors primary pigments CHAPTER RESOURCES SECTION OUTLINE

Light waves interact with materials. 17.4 Light waves interact with materials. • Visible light is made up of individual color wavelengths. transmission absorption scattering polarization prism primary colors primary pigments CHAPTER RESOURCES SECTION OUTLINE

Light waves interact with materials. 17.4 Light waves interact with materials. • The primary colors are red, blue, and green. transmission absorption scattering polarization prism primary colors primary pigments CHAPTER RESOURCES SECTION OUTLINE

Light waves interact with materials. 17.4 Light waves interact with materials. • The primary pigments are yellow, cyan, and magenta. transmission absorption scattering polarization prism primary colors primary pigments CHAPTER RESOURCES SECTION OUTLINE

17.1 Electromagnetic waves have unique traits. I. Electromagnetic waves have unique traits. electromagnetic wave A. An electromagnetic wave is a disturbance in a field. radiation 1. How EM Waves Form 2. Sources of EM Waves B. Electromagnetic waves can travel in a vacuum. 1. How EM Waves Travel in a Vacuum 2. The Speed of EM Waves in a Vacuum C. Electromagnetic waves can interact with a material medium. 1. Transferring Energy CHAPTER RESOURCES 2. Converting Energy from One Form to Another KEY CONCEPT SUMMARY

Electromagnetic waves have many uses. 17.2 Electromagnetic waves have many uses. II. Electromagnetic waves have many uses. EM spectrum A. EM waves have different frequencies. 1. The Electromagnetic Spectrum radio waves 2. Measuring EM Waves microwaves B. Radio waves and microwaves have long wavelengths and low frequencies. visible light infrared light 1. Radio Waves 2. Microwaves ultraviolet light C. Infrared, visible, and ultraviolet light have mid-range wavelengths and frequencies. x-rays gamma rays 1. Infrared Light CHAPTER RESOURCES 2. Ultraviolet Light D. X-rays and gamma rays have short wavelengths and high frequencies. KEY CONCEPT SUMMARY

The Sun is the source of most visible light. 17.3 The Sun is the source of most visible light. III. The Sun is the source of most visible light. incandescence A. Light comes from the Sun and other natural sources. luminescence B. Some living things produce visible light. bioluminescence C. Human technologies produce visible light. fluorescence 1. Incandescent and Fluorescent Lighting 2. Other Types of Artificial Lighting CHAPTER RESOURCES KEY CONCEPT SUMMARY

Light waves interact with materials. 17.4 Light waves interact with materials. IV. Light waves interact with materials. transmission A. Light can be reflected, transmitted, or absorbed. absorption 1. How Materials Transmit Light scattering 2. Scattering polarization 3. Polarization prism B. Wavelength determines color. primary colors 1. Color Reflection and Absorption primary pigments 2. Primary Colors of Light 3. Primary Pigments CHAPTER RESOURCES KEY CONCEPT SUMMARY

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