Exploring Sound Waves and Their Properties

The distance from the beginning of one compression to the beginning of the next compression is called a -----

• Rarefaction

• Frequency

• Wavelength

• Compression

The part of the sound wave when particles are grouped tightly together

• compression

• rarefaction

If the distance represented by the letter A were increased, how would it change the way the sound was heard?

• The sound would be higher. 

• The sound would be lower. 

• The sound would be softer. 

• The sound would be louder. 

What is the unit of frequency in the International System of Units (SI)?

• Metre

• Hertz

• Decibel

• Joule

Which of the following properties of sound waves determines the pitch of the sound?

• Amplitude

• Frequency

• Wavelength

• Speed

What is the speed of sound in air at room temperature (approximately 20°C)?

• 150 m/s

• 240 m/s

• 340 m/s

• 440 m/s

Which of the following factors does NOT affect the speed of sound in a medium?

• Temperature

• Density

• Humidity

• Colour

Which of the following is a property of a longitudinal wave like sound?

• Particles move perpendicular to the direction of wave movement.

• Particles move in the same direction of wave movement.

• It cannot travel through solids.

• It travels faster in a vacuum.

Which of the following mediums allows sound to travel the fastest?

• Air

• Water

• Steel

• Vacuum

What is the effect on the amplitude of a sound wave if the sound becomes louder?

• The amplitude increases.

• The amplitude decreases.

• The amplitude remains the same.

• The amplitude becomes zero.