Everyday Science

Which one is not a rough surface?

A. Paper

B. Wall

C. Cloth

D. Mirror

Sound stimulates sense of ________.

A. Sight

B. Hearing

C. Taste

D. Touch

Sound travels as ________ waves.

A. Longitudinal

B. Waves

C. Particles

D. None of these

Sound is produced by _________ body.

A. Body

B. Loud speaker

C. Vibrating body

D. None of these

Which of these is necessary for hearing sound?

A. Vibration

B. Medium

C. Receiver

D. All of these

Hearing takes place when vibrations of frequency between ________ reaches our ears.

A. 30 Hertz to 40000 Hertz

B. 20 Hertz to 20,000 Hertz

C. 50 Hertz to 50000 Hertz

D. None of these

When something is moved _______ us done.

A. Work

B. Energy

C. Power

D. None of these

Sound can’t travel without ________.

A. Medium

B. Electricity

C. None of these

Loons are?

A. Animals

B. Birds

C. None of these

When Loons produce sound, they sound like?

A. Laughing

B. Crying

C. Hissing

D. None of these

The distance covered by sound in unit time is called ________ of sound.

A. Velocity

B. Speed

C. Acceleration

D. None of these

At a temperature of OoC, the speed of sound in air, dry sea level is ________ m/s.

A. 332

B. 330

C. 380

D. 400

The speed of sound increases with increase in _______.

A. Air

B. Temperature

C. None of these

_____Ear helps in maintaining balance of the body.

A. Outer ear

B. Middle ear

C. Inner ear

D. All of these

Speed of sound at 20oC is _______ m/s.

A. 320

B. 340

C. 350

D. 360

Speed of sound is fastest in?

A. Solid

B. Liquid

C. Gas

D. None of these

Speed of sound in water is _________ m/s.

A. 1600

B. 1500

C. 1400

D. 1525

Speed of sound in Iron is ______ m/s.

A. 5130

B. 5000

C. 6000

D. 8000

Ear drum of ear is very?

A. Tough

B. Sensitive

C. Hard

D. None of these

Back and forth movement of object is called?

A. Noise

B. Sound

C. Vibration

D. None