IGCSE Physics Sound

How is sound primarily produced?

• A) Through the emission of light waves

• B) By the vibration of objects

• C) Through the movement of air particles

• D) By the generation of electrical currents

Which of the following is an example of a sound-producing vibration?

• A) The movement of a car on a road

• B) The heating of water in a kettle

• C) The rotation of a ceiling fan

• D) Plucking a guitar string

What happens to the speed of sound in air when the temperature increases?

• A) It decreases

• B) It remains constant

• C) It increases

• D) It depends on the humidity

How does sound primarily travel through a medium?

• A) By the transmission of light waves

• B) By the movement of air particles

• C) By the transfer of electrical charges

• D) By the generation of magnetic fields

In which of the following mediums does sound travel the fastest?

• A) Air

• B) Water

• C) Steel

• D) Vacuum

What is the main factor that affects the speed of sound in a given medium?

• A) Temperature of the medium

• B) Color of the medium

• C) Humidity of the medium

• D) Density of the medium

What type of wave is a sound wave?

• A) Transverse wave

• B) Electromagnetic wave

• C) Longitudinal wave

• D) Surface wave

In a longitudinal sound wave, the particles of the medium move in which direction relative to the direction of the wave propagation?

• A) Perpendicular

• B) Opposite

• C) At right angles

• D) In the same direction

What is the term for the distance between two consecutive points in a sound wave that are in phase with each other, such as two consecutive compressions or rarefactions?

• A) Wavelength

• B) Amplitude

• C) Frequency

• D) Velocity

In a longitudinal sound wave, which part corresponds to regions of maximum compression?

• A) Troughs

• B) Crests

• C) High points

• D) Compressions