Physics Of Sound Post-test Kettl

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  • 1/15 Questions

    THe highness or lowness of a sound is the

    • Pitch
    • Loudness
    • Vibration
    • Resonance
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About This Quiz


Sound is a wonderful thing, a sense we often take for granted without taking a closer look at the science behind such a wonderful concept. What do you know about sound and how it works? Let’s find out.

Physics Of Sound Post-test Kettl - Quiz

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  • 2. 

    Which of the following would produce the hightest pitch?

    • Phone

    • Whistle

    • Truck horn

    • Dog's growl

    Correct Answer
    A. Whistle
    Explanation
    A whistle would produce the highest pitch among the given options. Whistles are designed to produce a high-pitched sound due to their small size and narrow opening. When air is blown through the whistle, it passes through this narrow opening, causing vibrations at a high frequency, resulting in a high-pitched sound. On the other hand, a phone, truck horn, and dog's growl produce lower-pitched sounds due to their larger size and different mechanisms of sound production.

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  • 3. 

    Which of the following would produce the loudest sound?

    • Jet plane

    • Pin falling

    • Doorbell

    • Whisper

    Correct Answer
    A. Jet plane
    Explanation
    A jet plane would produce the loudest sound because it is a large and powerful aircraft that generates a significant amount of noise from its engines. The engines of a jet plane produce a high level of sound intensity, which is much louder than a pin falling, a doorbell, or a whisper. The sound produced by a jet plane can reach levels that can be heard from a great distance and can even cause discomfort or damage to the ears if exposed for a prolonged period.

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  • 4. 

    An object or material that vibrates in a way that makes sound is called the

    • Sound source

    • Receiver

    • Sound wave

    • Pitch

    Correct Answer
    A. Sound source
    Explanation
    The correct answer is "sound source" because an object or material that vibrates in a way that produces sound is the source of the sound. It is responsible for creating the vibrations that travel through the air as sound waves, allowing us to hear the sound.

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  • 5. 

    A student holds two vibrating objects.  Object A is vibrating faster than object B.  Which statement is true?

    • A is louder than B

    • B is louder than A

    • A will have a higher pitch than B

    • B will have a higher pitch than A

    Correct Answer
    A. A will have a higher pitch than B
    Explanation
    When an object vibrates faster, it produces sound waves with a higher frequency. Pitch is determined by the frequency of the sound waves, so if object A is vibrating faster than object B, it means that object A will have a higher pitch than object B.

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  • 6. 

    A unit for measuring the loudness of sounds is

    • Vibration

    • Decibel

    • Frequency

    • Pitch

    Correct Answer
    A. Decibel
    Explanation
    Decibel is the correct answer because it is a unit used to measure the loudness of sounds. It is a logarithmic scale that compares the intensity of a sound to a reference level. The decibel scale allows us to quantify the range of human hearing, with 0 decibels representing the threshold of hearing and 120 decibels representing the threshold of pain. By using decibels, we can accurately measure and compare the loudness of different sounds.

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  • 7. 

    A process for locating distant or invisible objects by using sound waves that are reflected back to the sender

    • Vibration

    • Receiver

    • Echolocation

    • Source

    Correct Answer
    A. Echolocation
    Explanation
    Echolocation is a process that involves using sound waves to locate distant or invisible objects. The sender emits sound waves, which then bounce off the objects and are reflected back to the receiver. By analyzing the pattern of these reflected sound waves, the receiver can determine the location and distance of the objects. Echolocation is commonly used by animals such as bats and dolphins to navigate and find prey in their environment.

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  • 8. 

    Something that detects sound is a

    • Sound wave

    • Volume

    • Amplitude

    • Sound receiver

    Correct Answer
    A. Sound receiver
    Explanation
    A sound receiver is the most appropriate answer because it is a device or mechanism that is designed to detect and receive sound. It is commonly used in various audio equipment such as speakers, microphones, and headphones to capture and reproduce sound waves. The other options, such as sound wave, volume, and amplitude, are related to sound but do not specifically refer to a device that detects sound.

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  • 9. 

    When you make sounds by plucking a rubber band, you make the rubber band move back and forth very quickly.  This movement is called

    • Loudness

    • Amplitude

    • Pitch

    • Vibration

    Correct Answer
    A. Vibration
    Explanation
    When you pluck a rubber band, it starts to move back and forth rapidly. This rapid back and forth motion is known as vibration. The rubber band vibrates, creating sound waves that we hear. Therefore, the correct answer is vibration.

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  • 10. 

    If you tighten a string and keep plucking it with your finger as you pull, what happens to the pitch?

    • As you tighten the string, the pitch gets lower

    • The pitch stays the same

    • As you tighten the string, the pitch gets higher

    • You can't tell unless you try it

    Correct Answer
    A. As you tighten the string, the pitch gets higher
    Explanation
    When a string is tightened, the tension in the string increases. This increased tension causes the string to vibrate at a higher frequency, resulting in a higher pitch. Therefore, as the string is tightened and plucked, the pitch of the sound produced will get higher.

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  • 11. 

    If you roll a large sheet of paper into a funnel, you can hear the sound better.  This process of increasing the loudness of a sound is called

    • Measuring a wave

    • Absorption

    • Reflection

    • Amplification

    Correct Answer
    A. Amplification
    Explanation
    When a large sheet of paper is rolled into a funnel shape, it creates a narrow opening at one end. This funnel shape helps to concentrate and direct the sound waves towards the listener, making them more focused and intense. This concentration of sound waves increases the loudness of the sound, which is why it is called amplification.

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  • 12. 

    The loudness of a sound is called

    • The sound wave

    • The volume

    • The amplitude

    • The pitch

    Correct Answer
    A. The volume
    Explanation
    The correct answer is "the volume". The loudness of a sound is commonly referred to as its volume. Volume is a measure of the intensity or strength of a sound wave, indicating how loud or soft a sound is perceived by the human ear. It is determined by the amplitude of the sound wave, with higher amplitudes corresponding to louder volumes. Therefore, volume accurately describes the loudness of a sound.

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  • 13. 

    Being able to tell different sounds apart is called

    • Sound amplification

    • Sound discrimination

    • Vibration

    • Frequency

    Correct Answer
    A. Sound discrimination
    Explanation
    Sound discrimination refers to the ability to distinguish and recognize different sounds. It involves the brain's ability to process and interpret the characteristics of sound, such as pitch, volume, and tone. This skill is important for understanding speech, music, and environmental sounds. Sound amplification refers to increasing the volume or intensity of sound. Vibration refers to the rapid back-and-forth movement of an object, which can produce sound. Frequency refers to the number of complete cycles of a sound wave that occur in a second and is related to the pitch of the sound.

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  • 14. 

    The speed at which something vibrates is called

    • Pitch

    • Amplitude

    • Resonance

    • Frequency

    Correct Answer
    A. Frequency
    Explanation
    Frequency refers to the number of vibrations or oscillations per unit of time. It is a measure of how fast something vibrates. Therefore, the correct answer is frequency.

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  • 15. 

    The same sound will seem louder if it travels through which of the following?

    • Solid objects

    • Liquids

    • Air

    • Solids, liquids and gases will sound the same

    Correct Answer
    A. Solid objects
    Explanation
    When sound travels through solid objects, it tends to propagate faster and more efficiently compared to liquids and air. This is because solids have a higher density and a more rigid structure, allowing sound waves to travel with less resistance. As a result, the same sound will appear louder when it travels through solid objects.

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  • Current Version
  • Apr 29, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 18, 2013
    Quiz Created by
    Sbandres
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