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Ch 26: General Science: Electromagnetic Spectrum

About This Chapter

The NES General Science exam is now used in the place of the AEPA General Science test. Prepare for questions on this certification exam regarding the regions of the electromagnetic spectrum, and the nature of electromagnetic waves.

AEPA General Science: Electromagnetic Spectrum - Chapter Summary

Use this series of short, engaging and mobile-device-friendly lesson videos to review the properties and nature of electromagnetic waves. These lesson videos are taught by expert instructors and will help you improve your understanding of:

  • Sources and properties of electromagnetic waves
  • Seven regions of the electromagnetic spectrum
  • Colors in the electromagnetic spectrum
  • Reflection and diffuse reflection
  • Resonance and the transmission of waves
  • Differences between transparent and opaque materials

If at any time during this chapter you develop a question about these lessons, be sure to send it to our instructors through the Teacher tab of the lesson. After you complete a lesson, take the quiz that accompanies it to see if there are any lesson segments you need to revisit.

7 Lessons in Chapter 26: General Science: Electromagnetic Spectrum
Test your knowledge with a 30-question chapter practice test
Electromagnetic Waves: Definition, Sources & Properties

1. Electromagnetic Waves: Definition, Sources & Properties

In this lesson, learn the basics of electromagnetic waves and how they make up the electromagnetic spectrum. We will explore the major trends and categories within the spectrum, as well as the various sources of electromagnetic waves.

The 7 Major Regions of the Electromagnetic Spectrum

2. The 7 Major Regions of the Electromagnetic Spectrum

This lesson will walk you through each of the major regions of the electromagnetic spectrum. Explore the unique characteristics of X-rays, microwaves, radio waves, UV rays, infrared, gamma rays, and of course, visible light.

The Nature of Light: Origin, Spectrum & Color Frequency

3. The Nature of Light: Origin, Spectrum & Color Frequency

This lesson introduces the basics of visible light and color. Learn how the visible light spectrum is divided into the six color ranges. We'll also discuss why different people name colors in different ways.

Reflection: Angle of Incidence and Curved Surfaces

4. Reflection: Angle of Incidence and Curved Surfaces

How do waves reflect off of surfaces? How do we account for the images that we see reflected in various objects? Discover the answers to these questions as we investigate the rays and angles defining the law of reflection.

Diffuse Reflection: Definition, Examples & Surfaces

5. Diffuse Reflection: Definition, Examples & Surfaces

This lesson explores the law of reflection and how it applies to different surfaces and wave types. We'll learn the difference between specular and diffuse reflection and investigate how diffuse reflection affects our perception of sound and light.

Resonance: Definition & Transmission of Waves

6. Resonance: Definition & Transmission of Waves

This lesson describes how sound and light waves are affected by the principle of resonance. Learn how resonance occurs through the vibrations and resonant frequencies of objects. You'll investigate everyday examples of resonance and learn how to break a wine glass with your voice!

Transparent and Opaque Materials in Electromagnetic Waves

7. Transparent and Opaque Materials in Electromagnetic Waves

What makes an object transparent or opaque? How does light pass through some objects and not others? And what about the other types of electromagnetic waves? We'll investigate all these questions in this lesson about the transparency and opacity of materials.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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Other Chapters

Other chapters within the AEPA General Science (NT311): Practice & Study Guide course

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