sound (class 9)

Which part of human ear converts sound vibrations into electrical signals

• Hammer

• Stirrup

• Tympanic membrane

• Cochlea

Children under the age of 5 can hear upto

• 25 Hz

• 20 kHz

• 30 kHz

• 25kHz

Tags

NGSS.4-PS4-1

NGSS.4-PS3-2

Speed of sound depends upon

• temperature of medium

• pressure of medium

• Temperature of source producing sound

• . Temperature and pressure of medium

Which characteristic is this? We can distinguish between sound having same pitch and loudness.

• tone

• pitch

• amplitude

• timber

Loud sound can travel a larger distance, due to

• Higher amplitude

• Higher energy

• High frequency

• High speed

Tags

NGSS.4-PS4-1

NGSS.4-PS3-2

what are transverse waves ?

• In these waves the individual particles of the medium move in a direction parallel to the direction of propagation of the disturbance

• In these waves the individual particles of the medium move in a direction perpendicular to the direction of propagation of the disturbance

• both 1st and 2nd options

• none of above

longitudinal waves are?

• In these waves the individual particles of the medium move in a direction perpendicular to the direction of propagation of the disturbance

• In these waves the individual particles of the medium move in a direction parallel to the direction of propagation of the disturbance

• both 1 and 2

• none of these

sound is a ..............

• transverse wave

• longitudinal wave

• both a and b

• none of these

Tags

NGSS.4-PS4-1

light is a .........

• transverse wave

• longitudinal wave

• both a and b

• none of these

Tags

NGSS.4-PS4-1

sound can not travel through .......

• ocean water

• distilled water

• vacuum

• air

Tags

NGSS.4-PS4-1

NGSS.4-PS3-2