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# Hello Mello Essay

1383 words - 6 pages

Name ___________________________ Chapter 25 Vibrations and Waves

Class __________________

Date ____________

Exercises
25.1 Vibration of a Pendulum
(page 491)

1. The time it takes for one back-and-forth motion of a pendulum is called the . 2. List the two things that determine the period of a pendulum. 3. Circle the letter of each statement about a pendulum that is true. a. A longer pendulum has a longer period. b. A shorter pendulum swings with a greater frequency. c. Mass does not affect the period of the pendulum. d. All pendulums swing at the same rate.

25.2 Wave Description

(pages 491–493)

4. What is simple harmonic motion? 5. Is the following sentence true or ...view middle of the document...

a. They carry energy. b. Air is the medium they travel through. c. They are a disturbance that moves through the air. d. Air molecules are carried along with the wave.

25.4 Wave Speed

(pages 495–496)

17. Is the following sentence true or false? The speed of a wave depends on the medium through which it travels. 18. The speed of sound in air is about m/s to m/s. 19. Is the following sentence true or false? Sound travels faster in air than in water. 20. Circle the letter of each wave property that is related. a. speed b. frequency c. direction d. wavelength 21. Describe how to calculate the speed of a wave.

22. Circle the letter of the equation used to calculate a wave’s speed. a. v = p b. v = t c. v = f d. v = a is often used to represent wavelength. 23. The Greek letter 24. Is the following sentence true or false? The equation for calculating the speed of a wave does not apply to light waves. 25. Describe how wavelength and frequency are related for sound waves.

25.5 Transverse Waves

(pages 497)

26. Circle the letter that best describes a transverse wave. a. The medium does not vibrate. b. The medium vibrates at right angles to the direction the wave travels. c. The medium vibrates in the same direction the wave travels. d. A sound wave. 27. Circle the letter of each example of a transverse wave. a. waves in the strings of instruments b. radio waves c. light waves d. sound waves

210

Conceptual Physics Reading and Study Workbook

Chapter 25

Name ___________________________ Chapter 25 Vibrations and Waves

Class __________________

Date ____________

25.6 Longitudinal Waves

(page 497)

28. Describe the motion of the particles in a medium when a longitudinal wave passes through it.

29. What is an example of a longitudinal wave? 30. Identify the types of waves formed in part (a) and part (b) of the illustration below. b. a.

25.7 Interference

(pages 498–499)

31. A(n) is a regular arrangement of places where wave effects are increased, decreased, or neutralized. Match each term to its definition. Term 32. constructive interference 33. destructive interference 34. out of phase 35. in phase Definition a. when crests overlap troughs and effects are reduced b. when crests of one wave overlap the crests of another wave c. when crests overlap and effects add together d. when crests and troughs overlap to produce zero amplitude

36. Describe when wave interference occurs.

37. Is the following sentence true or false? Wave interference only occurs with transverse waves.

Conceptual Physics Reading and Study Workbook

Chapter 25 211

Name ___________________________ Chapter 25 Vibrations and Waves

Class __________________

Date ____________

25.8 Standing Waves

(pages 500–501)

38. Is the following sentence true or false? A wave that appears...

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