Question 1:

What property of sound is defined as the distance between two consecutive points in a sound wave that are in phase?

Explanation: The correct answer is B) Wavelength. Wavelength is the property of sound that is defined as the distance between two consecutive points in a sound wave that are in phase. It is commonly represented by the Greek letter lambda (λ) and is usually measured in meters. Wavelength and frequency are inversely proportional: longer wavelengths correspond to lower frequencies, while shorter wavelengths correspond to higher frequencies.

Question 2:

What is the speed of sound in air at room temperature?

Explanation: The correct answer is C) Approximately 300 meters per second. The speed of sound in air at room temperature (around 20 degrees Celsius) is approximately 343 meters per second (or about 1,235 kilometers per hour). However, the speed of sound can vary depending on factors such as temperature, humidity, and the composition of the medium through which it travels.

Question 3:

What happens to the speed of sound as the temperature of the medium increases?

Explanation: The correct answer is C) The speed of sound increases. As the temperature of the medium increases, the speed of sound also increases. This is because an increase in temperature leads to an increase in the average kinetic energy of the particles in the medium. The faster movement of particles allows sound waves to propagate more quickly, resulting in an increase in the speed of sound.

Question 4:

Which property of sound affects its diffraction ability?

Explanation: The correct answer is A) The wavelength decreases. The wavelength of sound is inversely proportional to its frequency. As the frequency of sound increases, the wavelength decreases. This means that a higher-pitched sound with a higher frequency will have a shorter wavelength, while a lower-pitched sound with a lower frequency will have a longer wavelength. This relationship holds true for sound waves in any medium.