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Name _________________________________________
Date _________________________
Class _____________________
TEACHING TRANSPARENCY 15
The Electromagnetic Spectrum
Chemistry: Matter and Change
1
Use with Chapter 5,
Section 5.1
Teaching Transparency
Name _________________________________________
Date _______________________ Class _______________________
TEACHING TRANSPARENCY 15
The Electromagnetic Spectrum
Use with Chapter 5,
Section 5.1
1. What kinds of waves have the longest wavelength? What kinds of waves have the shortest
wavelength?
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2. Which waves have the lowest frequency?
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3. Which has a higher frequency: microwaves or X rays?
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4. Which waves can be seen by the eye?
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5. Sequence the different segments of the visible spectrum in order from shortest wavelength to
longest wavelength.
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6. Sequence the following types of waves from lowest frequency to highest frequency:
ultraviolet rays, infrared rays, gamma rays, radio waves, and green light.
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7. Compare the wavelengths and frequencies of each kind of wave. What is the relationship between
frequency and wavelength?
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8. What is the wavelength of a radio station emitting its signal at 95.5 MHz? Estimate your answer to
the nearest power of ten.
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Chemistry: Matter and Change
2
Teaching Transparency Worksheet
TEACHER GUIDE AND ANSWERS
Teaching Transparency 15 –
The Electromagnetic Spectrum
1. Radio waves are the longest waves. Gamma rays are
the shortest waves.
2. Radio waves have the lowest frequency.
3. X-rays (1018 s1) have a higher frequency than
4.
5.
6.
7.
8.
microwaves (1011 s1).
The waves in the visible portion of the spectrum can
be seen by the eye.
violet, blue, green, yellow, orange, red light
radio waves, infrared waves, green light, ultraviolet
waves, gamma rays
Frequency and wavelength are inversely proportional.
This means that as wavelength increases, frequency
decreases and as frequency increases, wavelength
decreases.
The wavelength of a radio signal at 95.5 MHz is
about 1 m long, or 10 m.
Chemistry: Matter and Change
3
Teacher Guide and Answers