Questions: 1. A single vibratory disturbance that moves from point to point in a medium is called (1) a node (2) a periodic wave (3) an antinode (4) a pulse 2. What generally occurs when a pulse reaches a boundary between two different media? (1) All of the pulse is reflected. (2) All of the pulse is absorbed. (3) All of the pulse is transmitted. (4) Part of the pulse is reflected, part is absorbed, and part is transmitted. 3. A tuning fork vibrating in air produces sound waves. These waves are best classified as (1) transverse, because the air molecules are vibrating parallel to the direction of wave motion (2) transverse, because the air molecules are vibrating perpendicular to the direction of wave motion (3) longitudinal, because the air molecules are vibrating parallel to the direction of wave motion (4) longitudinal, because the air molecules are vibrating perpendicular to the direction of wave motion 4. When a transverse wave moves through a medium, what is the action of the particles of the medium? (1) They travel through the medium with the wave. (2) They vibrate in a direction parallel to the direction in which the wave is moving. (3) They vibrate in a direction perpendicular to the direction in which the wave is moving. (4) They remain at rest. 5. Compression waves in a spring are an example of (1) longitudinal waves (2) transverse waves (3) elliptical waves (4) torsional waves 6. Wave motion in a medium transfers (1) energy only (2) mass only (3) both energy and mass (4) neither energy nor mass 7. Periodic waves are produced by a wave generator at the rate of one wave every 0.50 second. What is the period of the wave? 8. Which phrase best describes a periodic wave? (1) a single pulse traveling at constant speed (2) a single pulse traveling at varying speed in the same medium (3) a series of pulses at irregular intervals (4) a series of pulses at regular intervals 9. In the diagram below, the solid line represents a wave generated in a rope. As the wave moves to the right, point P on the rope is moving towards which position? (1) A (2) B (3) C (4) D 10. In the diagram below, a transverse wave is moving to the right on a rope. In which direction will segment x move as the wave passes through it? (1) down, only (2) up, only (3) down, then up, then down (4) up, then down, then up 11. Which wave characteristic is defined as the number of cycles of a periodic wave occurring per unit time? 12. If the frequency of a sound wave is 440 cycles per second, the period of the wave is (1) 2.27 × 10^-3 s (2) 0.752 s (3) 1.33 s (4) 3.31 × 10^2 s 13. If the frequency of a sound wave is doubled, the period of the sound wave is (1) halved (2) doubled (3) unchanged (4) quadrupled

1. A single vibratory disturbance that moves from point to point in a medium is called Definition of a pulse A pulse is a single vibratory disturbance that moves from point to point in a medium.

\( \boxed{(4) \text{ a pulse}} \)

2. What generally occurs when a pulse reaches a boundary between two different media? Behavior of a pulse at a boundary When a pulse reaches a boundary between two different media, part of the pulse is reflected back into the original medium, part is absorbed by the boundary, and part is transmitted into the new medium.

\( \boxed{(4) \text{ Part of the pulse is reflected, part is absorbed, and part is transmitted.}} \)

3. A tuning fork vibrating in air produces sound waves. These waves are best classified as Nature of sound waves Sound waves are longitudinal waves, meaning that the air molecules vibrate parallel to the direction of wave motion.

\( \boxed{(3) \text{ longitudinal, because the air molecules are vibrating parallel to the direction of wave motion}} \)

4. When a transverse wave moves through a medium, what is the action of the particles of the medium? Particle motion in transverse waves In a transverse wave, the particles of the medium vibrate perpendicular to the direction in which the wave is moving.

\( \boxed{(3) \text{ They vibrate in a direction perpendicular to the direction in which the wave is moving.}} \)

5. Compression waves in a spring are an example of Type of compression waves Compression waves are longitudinal waves.

\( \boxed{(1) \text{ longitudinal waves}} \)

6. Wave motion in a medium transfers What wave motion transfers Wave motion transfers energy only.

\( \boxed{(1) \text{ energy only}} \)

7. Periodic waves are produced by a wave generator at the rate of one wave every 0.50 second. What is the period of the wave? Definition of period The period of a wave is the time it takes for one complete cycle to occur. Calculation of period Since one wave is produced every 0.50 seconds, the period is 0.50 seconds.

\( \boxed{0.50 \text{ s}} \)

8. Which phrase best describes a periodic wave? Definition of a periodic wave A periodic wave is a series of pulses at regular intervals.

\( \boxed{(4) \text{ a series of pulses at regular intervals}} \)

9. In the diagram, as the wave moves to the right, point P on the rope is moving towards which position? Direction of point P As the wave moves to the right, point P will move upwards towards position A.

\( \boxed{(1) \text{ A}} \)

10. In the diagram, a transverse wave is moving to the right on a rope. In which direction will segment x move as the wave passes through it? Motion of segment x Segment x will move up, then down, then back to its original position.

\( \boxed{(4) \text{ up, then down, then up}} \)

11. Which wave characteristic is defined as the number of cycles of a periodic wave occurring per unit time? Definition of frequency Frequency is defined as the number of cycles of a periodic wave occurring per unit time.

\( \boxed{\text{Frequency}} \)

12. If the frequency of a sound wave is 440. cycle per second, the period of the wave is Relationship between frequency and period The period (T) is the reciprocal of the frequency (f): \( T = \frac{1}{f} \) Calculation of period \( T = \frac{1}{440 \text{ Hz}} = 2.27 \times 10^{-3} \text{ s} \)

\( \boxed{(1) \ 2.27 \times 10^{-3} \text{ s}} \)

13. If the frequency of a sound wave is doubled, the period of the sound wave is Relationship between frequency and period The period is inversely proportional to the frequency. Effect of doubling frequency If the frequency is doubled, the period is halved.

\( \boxed{(1) \text{ halved}} \)

\( \boxed{(4) \text{ a pulse}} \) \( \boxed{(4) \text{ Part of the pulse is reflected, part is absorbed, and part is transmitted.}} \) \( \boxed{(3) \text{ longitudinal, because the air molecules are vibrating parallel to the direction of wave motion}} \) \( \boxed{(3) \text{ They vibrate in a direction perpendicular to the direction in which the wave is moving.}} \) \( \boxed{(1) \text{ longitudinal waves}} \) \( \boxed{(1) \text{ energy only}} \) \( \boxed{0.50 \text{ s}} \) \( \boxed{(4) \text{ a series of pulses at regular intervals}} \) \( \boxed{(1) \text{ A}} \) \( \boxed{(4) \text{ up, then down, then up}} \) \( \boxed{\text{Frequency}} \) \( \boxed{(1) \ 2.27 \times 10^{-3} \text{ s}} \) \( \boxed{(1) \text{ halved}} \)