S7U4R

The loudness of a sound depends on the​ ​ (a)  

• amplitude of sound waves
• frequency of sound waves
• pitch of sound
• reflection of sound

The speed of sound in solids is usually _______ the speed of sound in liquids.

• greater than

• less than

• same as

• sometimes greater and sometimes smaller

The speed of sound in gases is usually _______ the speed of sound in solids.

• same as

• greater than

• less than

• sometimes greater and sometimes smaller

In which medium does sound travel the fastest?

• solids

• liquids

• gases

• vacuum

Which of the following is the unit of loudness of sound?

• Decibel (dB)

• Newton (N)

• kilogram (kg)

• hertz (Hz)

Sound ​​ (a)   has the smallest amplitude.

• D
• A
• B
• C

Sound waves can travel through which of the following?

• Only gases and solids

• Only liquids and solids

• Gases, liquids, and solids

• Only gases and liquids

Soundwaves cannot travel through a ............

Which of the following is the unit of frequency of sound?

• Pascal (Pa)

• Hertz (Hz)

• Newton (N)

• Decibel (dB)

Which of the following sounds has the highest frequency?

• Sound A

• Sound B

• Sound C

• Sound D