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Questions and Answers
The frequency of a sound can be described as high pitched or low pitched.
True
The intensity of a sound can be described as soft or medium.
False
The duration of a sound can be described as rapid or slow.
False
Sound can propagate through air and materials.
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The sound is transformed into electrical impulses in the eardrum.
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You can hear your interlocutor speaking from a distance as long as the wire is loose.
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The vibration of a sound propagates through water in the same way as in the air.
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Low sounds have a short and repeated wave.
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You can make a sound weaker by pinching the phone wire.
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The movement of the candle's flame is observed when it is far from the speaker.
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Sound is not a kind of vibration.
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Grains of salt and pepper do not move on the cellophane membrane.
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You can amplify a sound by enclosing the sound source in a closed container.
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What is the result of sound vibrations on the eardrum?
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What is the main factor that determines the pitch of a sound?
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What is the role of the auditory nerve in the process of hearing?
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What is the source of sound?
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What can affect the timbre of a sound?
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What happens to the grains of salt and pepper on the cellophane membrane?
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What is the role of the wire in the telephone of cups experiment?
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What happens to the candle's flame when the speaker is nearby?
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How does the sound propagate in water compared to air?
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What can you do to make a sound louder?
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What is a characteristic of high sounds?
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What is a characteristic of low sounds?
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What is the result of placing your hands on your throat and chest when speaking?
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What is the characteristic of a sound with high frequency?
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What happens to the sound when it reaches the eardrum?
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What is necessary for sound to propagate?
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What is the role of the auditory nerve in the process of hearing?
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What can affect the timbre of a sound?
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What is a sound?
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What happens when you place your hands on your throat and chest when speaking?
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What do you observe in Experiment 2: Salt and pepper on a membrane?
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Why can you hear your interlocutor speaking from a distance in the telephone of cups experiment?
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What is the difference between high and low sounds?
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How can you make a sound louder or weaker?
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What happens to the sound in Experiment 5: The cellphone in the box?
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How does the sound propagate in water compared to air?
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Study Notes
Sound and Vibration
- A sound is a vibration that can be felt in our body, as demonstrated by placing hands on the throat and chest when speaking.
- Sound can be observed through the movement of objects, such as salt and pepper grains on a membrane, a candle flame, and a telephone wire.
Propagation of Sound
- Sound vibrations propagate through the air and make other objects vibrate.
- Sound can propagate through water, but not in the same way as in the air.
- The vibration of sound can be blocked or hindered by certain materials, such as plastic.
Characteristics of Sound
- Sound can be low-pitched (grave) or high-pitched (aigu).
- Low sounds have longer and more spread-out waves, while high sounds have shorter and more repeated waves.
- Sound can be loud (fort) or weak (faible), and its intensity can be amplified or attenuated.
- Sound can also be modified in terms of frequency, duration, and timbre (speed).
Sound Production and Perception
- Sound is produced by a source, such as a speaker, and makes the eardrum (tympan) vibrate.
- The vibration is transformed into electrical impulses and sent through the auditory nerve (nerf auditif).
- The sound is then decoded and understood in the brain.
Sound and Vibration
- A sound is a vibration that can be felt in our body, as demonstrated by placing hands on the throat and chest when speaking.
- Sound can be observed through the movement of objects, such as salt and pepper grains on a membrane, a candle flame, and a telephone wire.
Propagation of Sound
- Sound vibrations propagate through the air and make other objects vibrate.
- Sound can propagate through water, but not in the same way as in the air.
- The vibration of sound can be blocked or hindered by certain materials, such as plastic.
Characteristics of Sound
- Sound can be low-pitched (grave) or high-pitched (aigu).
- Low sounds have longer and more spread-out waves, while high sounds have shorter and more repeated waves.
- Sound can be loud (fort) or weak (faible), and its intensity can be amplified or attenuated.
- Sound can also be modified in terms of frequency, duration, and timbre (speed).
Sound Production and Perception
- Sound is produced by a source, such as a speaker, and makes the eardrum (tympan) vibrate.
- The vibration is transformed into electrical impulses and sent through the auditory nerve (nerf auditif).
- The sound is then decoded and understood in the brain.
Sound and Vibration
- A sound is a vibration that can be felt in our body, as demonstrated by placing hands on the throat and chest when speaking.
- Sound can be observed through the movement of objects, such as salt and pepper grains on a membrane, a candle flame, and a telephone wire.
Propagation of Sound
- Sound vibrations propagate through the air and make other objects vibrate.
- Sound can propagate through water, but not in the same way as in the air.
- The vibration of sound can be blocked or hindered by certain materials, such as plastic.
Characteristics of Sound
- Sound can be low-pitched (grave) or high-pitched (aigu).
- Low sounds have longer and more spread-out waves, while high sounds have shorter and more repeated waves.
- Sound can be loud (fort) or weak (faible), and its intensity can be amplified or attenuated.
- Sound can also be modified in terms of frequency, duration, and timbre (speed).
Sound Production and Perception
- Sound is produced by a source, such as a speaker, and makes the eardrum (tympan) vibrate.
- The vibration is transformed into electrical impulses and sent through the auditory nerve (nerf auditif).
- The sound is then decoded and understood in the brain.
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Description
This quiz is based on experiments that demonstrate the concept of sound as vibrations and waves. It includes hands-on activities to observe the effects of sound on different objects.
