G4 Science HW Properties of Sound Quiz

Which of the following is not related to sound?

• Vibrations

• Periscope

• Sound waves

• Electrical signals

Answer explanation

A periscope is related to light, not sound.

________ are transmitted along parts of our ears.

• Sounds

• Vibrations

• Sound waves

• Electrical signals

Answer explanation

When sound waves reach our ears, vibrations are transmitted along the parts of our ears and converted to electrical signals.

 

How does sound reach our ears?

• Through our brain

• Through vibrations

• Through sound waves

• Through electrical signals

Answer explanation

Energy from vibrations is transferred in the form of sound waves to our ears.

How can a sound of a high pitch be produced by a string instrument?

• By using long and thin strings

• By using short and thin strings

• By using long and thick strings

• By using short and thick strings

Answer explanation

Short and thin strings produce sounds of high pitch, while long and thick strings produce sounds of low pitch.

Alan has some glasses of the same size and height. He fills them with water of different volumes. He then strikes the glasses to produce sound. Which of the following is true?

(A)The glass with the least water produces the lowest pitch.

(B)The glass with the most water produces the lowest pitch.

(C)The glass with the least water produces the highest pitch.

(D) The glass with the most water produces the highest pitch.

• A and B

• A and D

• B and C

• C and D

Answer explanation

The glass with the least water is similar to an air column that is longest. Thus, it produces the lowest pitch. The glass with the most water is similar to an air column that is shortest. Thus, it produces the highest pitch.

Which of the following is false?

• Sound waves travel in the air.

• Vibrations are transmitted along parts of our ears.

• Vibrations are converted to many sounds by the brain.

• A vibration of a drum skin causes the air around the drum to vibrate.

Answer explanation

Vibrations are converted to electrical signals, which are sent to the brain.

Peter is making a string instrument. He wants one of the strings to have a low pitch. What should he do?

• Use a longer and thicker string and pull it tightly.

• Use a shorter and thinner string and pull it tightly.

• Use a longer and thicker string and pull it less tightly.

• Use a longer and thinner string and pull it less tightly.

Answer explanation

The length, thickness and tautness of a string affects pitch. A longer, thicker string that is less taut will give a lower pitch.

The following can affect the pitch of the sounds produced by an instrument, except ________.

• size

• colour

• length

• material

Answer explanation

The length, thickness and tautness of a string affects pitch. A longer, thicker string that is less taut will give a lower pitch.

Which of the following instruments produces sound using air columns of different lengths?

• Trumpet

• Pan flute

• Recorder

• Xylophone

Answer explanation

The pan flute uses air columns of different lengths to produce sounds of different pitches, but the trumpet, recorder and xylophone do not.

Which of the following does not affect the loudness of the sound produced?

• Distance from a radio

• Tautness of a string of a harp

• Amount of energy used to shout

• Amount of energy used to blow a recorder

Answer explanation

The tautness of a string of a harp affects the pitch of the sound produced, not its loudness.