Unit 7 - Waves: Quizizz Game 1

The Doppler effect is best described as the

• bending of waves as they pass by obstacles or through openings

• change in speed of a wave as the wave moves from one medium to another

• creation of a standing wave from two waves traveling in opposite directions in the same medium

• shift in the observed frequency and wavelength of a wave caused by the relative motion between the wave’s source and an observer

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A space probe produces a radio signal pulse. If the pulse reaches Earth 12.3 seconds after it is emitted by the probe, what is the distance from the probe to Earth?

• 3.71 x 10² m

• 4.07 x 10³ m

• 4.10 x 10⁸ m

• 3.69 x 10⁹ m

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A wave generator produces straight, parallel wave fronts in a shallow tank of uniform-depth water. As the frequency of vibration of the generator increases, which characteristic of the wave will always decrease?

• amplitude

• phase

• wavelength

• speed

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A student generates water waves in a pool of water. In order to increase the energy carried by the waves, the student should generate waves with a

• greater amplitude

• higher frequency

• greater wavelength

• longer period

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A student claps his hands once to produce a sudden loud sound that travels through the air. This sound is classified as a

• longitudinal mechanical wave

• longitudinal electromagnetic wave

• transverse mechanical wave

• transverse electromagnetic wave

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The horn of a car produces a sound wave of constant frequency. The car, traveling at constant speed, approaches, passes, and then moves away from a stationary observer. Which graph best represents the frequency of this sound wave detected by the observer during the time interval in which the car approaches, passes, and moves away?

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As represented in the diagram below, two wave pulses, X and Y, are traveling toward each other in a rope. Both wave pulses have an amplitude of 0.30 m. Which diagram shows the pulse produced due to the superposition of pulse X and pulse Y?

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In the diagram below, X represents a particle in a spring. Which diagram represents the motion of particle X as a longitudinal wave passes through the spring toward the right?

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The ratio of the wavelength of AM radio waves traveling in a vacuum to the wavelength of FM radio waves traveling in a vacuum is approximately

• 1 to 1

• 2 to 1

• 10² to 1

• 10⁸ to 1

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A microwave with a frequency of 5.0 × 10¹⁰ hertz has a period of

• 2.0 × 10⁻¹¹ s

• 6.0 × 10⁻³ s

• 1.7 × 10² s

• 1.5 × 10¹⁹ s

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