What is the aim of the speed of sound in air core practical?

The aim of the speed of sound in air core practical is to measure the speed of sound in air between two points.

What is the independent variable in the speed of sound in air core practical?

The independent variable in the speed of sound in air core practical is the distance between the two points.

What is the dependent variable in the speed of sound in air core practical?

The dependent variable in the speed of sound in air core practical is the time between clapping and hearing the clap.

What is the purpose of the microphones in the measuring the speed of sound using an oscilloscope core practical?

The purpose of the microphones is to detect sound waves and convert them into an electrical signal.

How can systematic errors be minimized in measuring the speed of sound with an oscilloscope core practical?

Systematic errors can be minimized by ensuring the time-base scale is calibrated correctly on the oscilloscope.

What should be done to improve the accuracy of time measurements in the measuring the speed of sound in air experiment?

To improve accuracy, take repeat readings and calculate an average time to minimize random errors.

What is an oscilloscope ?

An oscilloscope is a device that can be used to study a rapidly changing signal.

State a type of rapidly changing signal that can be studied using an oscilloscope.

A type of rapidly changing signal that can be studied using an oscilloscope is any one from: a sound wave an alternating current

True or False? The sound detected by a microphone is displayed as a longitudinal wave on an oscilloscope.

False. The sound detected by a microphone is displayed as a transverse wave on an oscilloscope.

State the quantity on the x-axis of the oscilloscope.

The quantity on the x-axis of the oscilloscope is time base .

State the wave feature that the time base on an oscilloscope screen is used to measure.

The wave feature that the time base on an oscilloscope screen is used to measure is time period .

State the quantity related to the height of the wave on the oscilloscope screen.

The quantity related to the height of the wave on the oscilloscope screen is amplitude .

State what happens to the wave frequency when more waves are displayed on the oscilloscope screen.

The wave frequency increases when more waves are displayed on the oscilloscope screen

What is the aim of the oscilloscope core practical?

The aim of the oscilloscope core practical is to investigate the frequency of a sound wave using an oscilloscope.

What is the purpose of the tuning fork in the oscilloscope core practical?

The purpose of the tuning fork in the oscilloscope core practical is to generate sound waves of different frequencies.

What is the dependent variable in the oscilloscope core practical?

The dependent variable in the oscilloscope core practical is the time period .

True or False? The microphone must be connected to the oscilloscope for the sound to be displayed on the screen.

True. The microphone must be connected to the oscilloscope for it to display the sound wave.

What is the resolution of the time base on an oscilloscope usually measured in?

The resolution of the time base is usually measured in milliseconds per centimetre (ms/cm).

How can random errors be minimised in the oscilloscope core practical?

Random errors can be minimised by carrying out the experiment in a quiet location.

What should be done to the oscilloscope display in the oscilloscope core practical after striking the tuning fork?

The oscilloscope display should be frozen or a picture taken to measure and record the time period of the wave signal after striking the tuning fork.

What is the relationship between the frequency of a sound wave and its pitch ?

Sounds with a high frequency (or short wavelength) have a high pitch , and sounds with a low frequency (or long wavelength) have a low pitch .

What is the relationship between the amplitude of a sound wave and its volume ?

Sounds with a large amplitude have a high volume , and sounds with a small amplitude have a low volume .

True or False? Decreasing the amplitude of a sound wave will increase its volume.

False. Decreasing the amplitude of a sound wave will decrease its volume.

True or False? Increasing the frequency of a sound wave will increase its volume.

False. Increasing the frequency of a sound wave will increase its pitch .

How do you decrease the pitch of a soundwave?

Decreasing the frequency of a sound wave will decrease the pitch of the sound.

What effect would increasing the amplitude of a sound wave have on the sound?

Increasing the amplitude of a soundwave would increase the volume of the sound.

State the frequency range for human hearing.

The frequency range for human hearing is 20 to 20 000 Hz .

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Sound (Edexcel IGCSE Physics)

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FrontCore Practical: Investigating the Speed of Sound
What is the aim of the speed of sound in air core practical?

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What is the aim of the speed of sound in air core practical?
The aim of the speed of sound in air core practical is to measure the speed of sound in air between two points.
What is the independent variable in the speed of sound in air core practical?
The independent variable in the speed of sound in air core practical is the distance between the two points.
What is the dependent variable in the speed of sound in air core practical?
The dependent variable in the speed of sound in air core practical is the time between clapping and hearing the clap.
What is the purpose of the microphones in the measuring the speed of sound using an oscilloscope core practical?
The purpose of the microphones is to detect sound waves and convert them into an electrical signal.
State the equation to calculate the speed of sound between two points.
The equation to calculate the speed of sound between two points is:
$speed = \frac{distance}{time}$
How can systematic errors be minimized in measuring the speed of sound with an oscilloscope core practical?
Systematic errors can be minimized by ensuring the time-base scale is calibrated correctly on the oscilloscope.
What should be done to improve the accuracy of time measurements in the measuring the speed of sound in air experiment?
To improve accuracy, take repeat readings and calculate an average time to minimize random errors.
State the name of the core practical that uses the equipment in the diagram.
The core practical that uses the equipment in the diagram is measuring the speed of sound with an oscilloscope.
State the name of the core practical that uses the set-up in the diagram.
The core practical that uses the set-up in the diagram is measuring the speed of sound in air.
What is an oscilloscope?
An oscilloscope is a device that can be used to study a rapidly changing signal.
State a type of rapidly changing signal that can be studied using an oscilloscope.
A type of rapidly changing signal that can be studied using an oscilloscope is any one from:
- a sound wave
- an alternating current
State the name of the device shown in the diagram.
The name of the device shown in the diagram is an oscilloscope.
True or False?
The sound detected by a microphone is displayed as a longitudinal wave on an oscilloscope.
False.
The sound detected by a microphone is displayed as a transverse wave on an oscilloscope.
State the quantity on the x-axis of the oscilloscope.
The quantity on the x-axis of the oscilloscope is time base.
State the wave feature that the time base on an oscilloscope screen is used to measure.
The wave feature that the time base on an oscilloscope screen is used to measure is time period.
State the quantity related to the height of the wave on the oscilloscope screen.
The quantity related to the height of the wave on the oscilloscope screen is amplitude.
State what happens to the wave frequency when more waves are displayed on the oscilloscope screen.
The wave frequency increases when more waves are displayed on the oscilloscope screen
What is the aim of the oscilloscope core practical?
The aim of the oscilloscope core practical is to investigate the frequency of a sound wave using an oscilloscope.
What is the purpose of the tuning fork in the oscilloscope core practical?
The purpose of the tuning fork in the oscilloscope core practical is to generate sound waves of different frequencies.
What is the dependent variable in the oscilloscope core practical?
The dependent variable in the oscilloscope core practical is the time period.
True or False?
The microphone must be connected to the oscilloscope for the sound to be displayed on the screen.
True.
The microphone must be connected to the oscilloscope for it to display the sound wave.
What is the resolution of the time base on an oscilloscope usually measured in?
The resolution of the time base is usually measured in milliseconds per centimetre (ms/cm).
How can random errors be minimised in the oscilloscope core practical?
Random errors can be minimised by carrying out the experiment in a quiet location.
What should be done to the oscilloscope display in the oscilloscope core practical after striking the tuning fork?
The oscilloscope display should be frozen or a picture taken to measure and record the time period of the wave signal after striking the tuning fork.
What is the relationship between the frequency of a sound wave and its pitch?
Sounds with a high frequency (or short wavelength) have a high pitch, and sounds with a low frequency (or long wavelength) have a low pitch.
What is the relationship between the amplitude of a sound wave and its volume?
Sounds with a large amplitude have a high volume, and sounds with a small amplitude have a low volume.
True or False?
Decreasing the amplitude of a sound wave will increase its volume.
False.
Decreasing the amplitude of a sound wave will decrease its volume.
True or False?
Increasing the frequency of a sound wave will increase its volume.
False.
Increasing the frequency of a sound wave will increase its pitch.
How do you decrease the pitch of a soundwave?
Decreasing the frequency of a sound wave will decrease the pitch of the sound.
What effect would increasing the amplitude of a sound wave have on the sound?
Increasing the amplitude of a soundwave would increase the volume of the sound.
State the frequency range for human hearing.
The frequency range for human hearing is 20 to 20 000 Hz.
The diagram shows two waveforms displayed on an oscilloscope screen.
Identify the colour of the waveform that represents the loudest sound.
The waveform with the loudest sound is the one with the largest amplitude. This is the green waveform.