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Objectives

Section 2 Characteristics of Waves. Chapter 14. Objectives. Identify the crest, trough, amplitude, and wavelength of a wave. Define the terms frequency and period. Solve problems involving wave speed, frequency, and wavelength. Describe the Doppler effect.

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Objectives

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  1. Section 2 Characteristics of Waves Chapter 14 Objectives • Identify the crest, trough, amplitude, and wavelength of a wave. • Define the terms frequency and period. • Solve problems involving wave speed, frequency, and wavelength. • Describe the Doppler effect.

  2. Section 2 Characteristics of Waves Chapter 14 Bellringer There are many different types of waves. You may be familiar with the electromagnetic spectrum, which includes radio waves, microwaves, infrared light, visible light, ultraviolet light, X rays, and gamma rays. • Name five common applications of waves in the electromagnetic spectrum, and list the type of wave used in each case. • Lasers are made from accurately focused visible light waves that are produced in phase with each other. Lasers made from visible light waves are often used in surgery to perform delicate procedures and to seal the area being treated. Write a paragraph describing how you think this process works.

  3. Section 2 Characteristics of Waves Chapter 14 Wave Properties

  4. Section 2 Characteristics of Waves Chapter 14 Wave Properties • An ideal transverse wave has the shape of asine curve. • Waves that have the shape of a sine curveare calledsine waves.

  5. Section 2 Characteristics of Waves Chapter 14 Wave Properties, continued • Amplitude measures the amount of particle vibration. • Thecrest is the highest point of atransverse wave. • Thetrough is the lowest point of atransverse wave. • Theamplitude isthe maximum distance that the particles of a wave’s medium vibrate from their rest position.

  6. Section 2 Characteristics of Waves Chapter 14 Characteristics of a Wave

  7. Section 2 Characteristics of Waves Chapter 14 Wave Properties, continued • A longitudinal wave has compressions and rarefactions. • The crowded areas are calledcompressions. • The stretched-out areas are calledrarefactions. • The amplitude of a longitudinal wave is the maximum deviation from the normal density or pressure of the medium.

  8. Section 2 Characteristics of Waves Chapter 14 Wave Properties, continued A. A longitudinal wave has compressions and rarefactions. B. The high and low points of this sine curve correspond to compressions and rarefactions in the spring.

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