1. 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

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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

8. 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

9. 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

10. 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

11. 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.
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x-rays
gamma rays
CHAPTER
RESOURCES
SECTION
OUTLINE

12. 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

13. 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

14. 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

15. 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

16. 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

17. 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

18. 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

19. 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

20. 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

21. 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
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KEY CONCEPT
SUMMARY

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