Which statement regarding sound traveling in air is correct?
(1 point)
Responses
The frequency of a sound does not affect the speed at which it travels.
The frequency of a sound does not affect the speed at which it travels.
A wave with a shorter wavelength is always faster than one with a longer wavelength.
A wave with a shorter wavelength is always faster than one with a longer wavelength.
As the wavelength increases, the frequency also increases.
As the wavelength increases, the frequency also increases.
A loud sound travels faster than a quiet sound.
None of the statements is correct. The speed of sound in air is mainly determined by the temperature and humidity of the air, and is not affected by the frequency or amplitude of the sound wave. Wavelength and frequency are inversely proportional, so as wavelength increases, frequency decreases, and vice versa. The loudness of a sound is not related to its speed of propagation.
Which statement about the effect of temperature on the speed of sound is correct?(1 point)
Responses
As temperature increases, the speed of sound increases because the medium becomes denser.
As temperature increases, the speed of sound increases because the medium becomes denser.
As temperature increases, the speed of sound increases because molecules in the medium collide more frequently.
As temperature increases, the speed of sound increases because molecules in the medium collide more frequently.
As temperature increases, the speed of sound decreases because molecules in the medium collide less frequently.
As temperature increases, the speed of sound decreases because molecules in the medium collide less frequently.
Changes in temperature have no effect on the speed of sound.
As temperature increases, the speed of sound increases because molecules in the medium collide more frequently.
The correct statement regarding sound traveling in air is: "A wave with a shorter wavelength is always faster than one with a longer wavelength."
To determine which statement regarding sound traveling in air is correct, we'll need to understand the basics of how sound waves propagate through air.
Sound waves are vibrations that travel through a medium, such as air, as a series of compressions and rarefactions. The speed at which sound travels in a medium depends on a few factors, such as the temperature, humidity, and composition of the medium itself.
Now let's evaluate each of the statements:
1. "The frequency of a sound does not affect the speed at which it travels."
This statement is incorrect. The speed of sound in air is indeed affected by the frequency of the sound waves. In general, sound waves with higher frequencies (shorter wavelengths) tend to travel faster through air than those with lower frequencies (longer wavelengths). However, it's important to note that this relationship is not always linear and can be influenced by other factors in the medium.
2. "A wave with a shorter wavelength is always faster than one with a longer wavelength."
This statement is incorrect. While it is generally true that sound waves with shorter wavelengths (higher frequencies) tend to travel faster, it is not an absolute rule. Various factors can affect the speed of sound in air, so it is not solely determined by the wavelength.
3. "As the wavelength increases, the frequency also increases."
This statement is incorrect. Wavelength and frequency are inversely related in a sound wave. As the wavelength increases, the frequency decreases, and vice versa. This relationship follows the equation: speed of sound = frequency × wavelength. Therefore, if the wavelength increases, the frequency decreases.
4. "A loud sound travels faster than a quiet sound."
This statement is incorrect. The loudness of a sound, which corresponds to its intensity or amplitude, does not directly affect the speed at which it travels. The speed of sound in air is determined by factors such as temperature and composition of the medium, not the loudness or intensity of the sound wave itself.
In conclusion, none of the given statements are correct. The speed of sound in air is mainly affected by factors such as the frequency, wavelength, temperature, humidity, and composition of the medium.