Properties of sound

Sound waves travel through……….

• solids
• liquids
• gases
• all the previous answeres

Sound waves do not travel through………..

• water
• air
• vacum
• wood

The sound produced from the school bell is considered as ……..waves

• longitudinal
• electromagnetic
• transverse
• longitudinal and transverse

All of the following indicate the nature of sound waves except that……

• it's mechanical longitudinal waves
• it propagates as spheres of compressions and rarefactions
• the velocity through air is 430 m/s
• it produced by electricity

Before using modern technology in communication , people in desert were putting their ears on the ground to the hear the sound of horses of their enemies at very far places because ……..

• sense of hearing is stronger than sense of vision
• the velocity of sound through solids is greater than through air
• sound travels faster than light
• sound of horse's hoof is very loud

The sound vellocity is measured in ………unit

• Hertz
• meter
• decibel
• meter/second

Soud wave that propagates through air with velocity 330 m/sec . And of wavelength 0.1 meter , its frequency equals……..

• 330 Kilohertz
• 3300 Hertz
• 33 Kilohertz
• 330 Herz

The voice of Adham differes from Sara because they are different in …….

• age
• intensity
• pitch
• kind

All of these sounds are of uniform frequency except the sound of ………..

• violen
• guitar
• loudspeakers
• piano

The human ears can often differentiate between the voice of the man and that of the woman , because…..

• the voice of woman is often high pitch and sharp
• the voice of woman is often low pitch and sharp
• the voice of woman is often high pitch and rough
• the voice of man is often high pitch and sharp