Ch 27: General Science: Waves, Optics & Sound

About This Chapter

The AEPA General Science exam is a National Evaluation Series (NES) test. This chapter will help you get ready for the NES General Science exam with video lessons and practice quizzes.

AEPA General Science: Waves, Optics & Sound - Chapter Summary

This study guide will help you review all the information about waves, sound and optics that you'll need to know for the AEPA General Science test. The lessons will cover topics like diffraction, wave-particle duality and color. By the end of the chapter, you'll also have reviewed the following:

  • Wave reflection, refraction and dispersion
  • Longitudinal and transverse waves
  • Wave parameters
  • Destructive and constructive interference
  • The Doppler effect
  • Telescope mounts and mirrors
  • Function of the lens in the eye
  • Compound microscopes
  • Prisms
  • Energy and motion in waves and vibrations
  • Speed, volume and pitch of sound

This chapter is broken down into short video lessons that clearly illustrate concepts in less than ten minutes. Watch the lessons as many times as you'd like or use the video timeline to easily jump to specific topics. Test your knowledge before or after each lesson with practice quizzes.

16 Lessons in Chapter 27: General Science: Waves, Optics & Sound
Test your knowledge with a 30-question chapter practice test
Reflection of Waves: Definition & Examples

1. Reflection of Waves: Definition & Examples

This lesson will define reflection in the context of waves, summarize the types of reflection, and provide examples of reflection in action. A short quiz will follow.

Refraction & Dispersion: Definition, Snell's Law & Index of Refraction

2. Refraction & Dispersion: Definition, Snell's Law & Index of Refraction

Refraction explains why light bends in water. But, did you know that mathematical laws determine exactly how light waves are bent? In this lesson, we'll explore the mechanics of wave refraction, including Snell's Law and the index of refraction.

Color: White Light, Reflection & Absorption

3. Color: White Light, Reflection & Absorption

What gives color to objects? How do light waves interact with materials to produce red and green or white and black? In this lesson, learn how white light is composed of all colors and how absorption and reflection influence our color perception.

Transverse & Longitudinal Waves: Definition & Examples

4. Transverse & Longitudinal Waves: Definition & Examples

What comes to mind when you think of a wave? Chances are your mental image takes the form of a transverse wave. But, longitudinal waves are just as important, and understanding the difference is vital to learning about waves. In this lesson, explore both types of waves and the unique characteristics of each.

Wave Parameters: Wavelength, Amplitude, Period, Frequency & Speed

5. Wave Parameters: Wavelength, Amplitude, Period, Frequency & Speed

How do we measure and describe waves? How do waves differ based upon their shapes? This lesson will guide you through the five wave parameters - period, frequency, amplitude, wavelength, and speed - that we use to characterize waves.

Diffraction: Relation to Sound & Light and Effects of Wavelength

6. Diffraction: Relation to Sound & Light and Effects of Wavelength

This lesson explores diffraction as one of the many behaviors of waves. Learn how diffraction occurs in sound and light waves and how it is affected by the wavelength of a wave. Find out how animals use diffraction to communicate and how scientists use it to study molecules.

Constructive and Destructive Interference

7. Constructive and Destructive Interference

What happens when one wave meets another? Do the waves converge to make one giant wave? Or, do they destroy each other? In this lesson, we'll explore the workings of wave interference.

Wave-Particle Duality: Concept, Explanation & Examples

8. Wave-Particle Duality: Concept, Explanation & Examples

Is light a particle with mass and substance? Or, is it just a wave traveling through space? Most scientists say light is both a particle and a wave! Find out how they came to this strange conclusion as we learn about the theory of wave-particle duality.

The Doppler Effect: Definition, Examples & Applications

9. The Doppler Effect: Definition, Examples & Applications

What is the Doppler effect? How does it affect our perceptions of sound and light? In this lesson, learn how traveling wave sources can change the way we observe sound and light waves. Explore the applications of the Doppler effect on shock waves, sonic booms, and the movements of distant galaxies.

Major Forms of Telescope Mounts & Modern Mirrors

10. Major Forms of Telescope Mounts & Modern Mirrors

This lesson will discuss two major telescope mounts, the equatorial and altazimuth mount, as well as two modern kinds of telescope mirrors, the floppy and segmented mirrors.

Lens of the Eye: Definition & Function

11. Lens of the Eye: Definition & Function

The lens of the eye focuses light and allows you to see. In this lesson, you will learn what the lens is made of and how it changes shape so that you can have clear vision.

Introduction to the Compound Microscope: Parts & Uses

12. Introduction to the Compound Microscope: Parts & Uses

The compound light microscope is a useful tool in any biology laboratory. In this lesson, you'll be introduced to the parts of a compound microscope, as well as understand the function of each of those parts.

What is a Prism? - Definition & Refraction

13. What is a Prism? - Definition & Refraction

In this lesson, you'll learn about the prism and what prisms do to white light. You'll explore the properties of light waves, as well as the concept of refraction, which causes white light to bend in a prism and spread out into the different spectrum of colors.

Vibrations and Waves: Energy and Motion

14. Vibrations and Waves: Energy and Motion

What is a wave? What causes waves, and how do they travel from one place to another? This lesson will guide you through the basics of waves. We'll discuss their origins from vibrations and investigate how they carry energy through a medium.

What is Sound? - Definition and Factors Affecting the Speed of Sound

15. What is Sound? - Definition and Factors Affecting the Speed of Sound

Explore the minute workings of sound waves and how they travel. We'll discuss the main factors that affect the speed of sound waves, and we'll try some mathematical problems involving the wave equation.

Pitch and Volume in Sound Waves

16. Pitch and Volume in Sound Waves

What do pitch and volume mean when talking about sound waves? Further your understanding of sound waves in this lesson as we explore the more familiar aspects of sound. We'll learn about pitch and volume and how they relate to sound wave parameters.

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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