G8-PHY-L5 Sound

How do we come to know that someone is at our door?

• By seeing them through a window
• By hearing the sound of the doorbell
• By smelling their perfume
• By feeling the vibrations on the floor

What is the purpose of the blindfold in the game of hide and seek?

• To make the game more challenging
• To prevent the blindfolded person from cheating
• To help the blindfolded person guess the closest player
• To make the blindfolded person dizzy

What is the role of sound in our lives?

• To help us see better
• To communicate with one another
• To create beautiful artwork
• To scare away animals

What do you feel when you touch a school bell when it is not producing sound?

• Vibrations
• Heat
• Cold
• Nothing

What happens when a tightly stretched band is plucked?

• It produces sound
• It becomes silent
• It starts vibrating
• It breaks

What happens when you strike a metal dish at its edge?

• You hear a sound
• The dish becomes hot
• The dish starts spinning
• The dish breaks

What do you observe on the surface of water when you strike a vibrating dish?

• Ripples or waves
• Bubbles
• Steam
• Nothing

What is the connection between sound and the vibrations of a body?

• Sound and vibrations are unrelated
• Vibrations create sound
• Sound creates vibrations
• Vibrations and sound are the same thing

Which part of the human body is responsible for producing sound?

• The nose
• The mouth
• The ears
• The voice box or larynx

What is the function of the eardrum?

• To amplify sound
• To filter out unwanted noise
• To convert sound into electrical signals
• To vibrate and transmit sound to the inner ear