Year 5-Quiz-Unit 2-Sound

Which material transmits sound the most effectively?

• Wood

• Metal

• Plastic

• Glass

What unit is used to measure the loudness of a sound?

• Gram

• Hertz

• Meter

• Decibel

Sound is produced by ____________. The vibrations travelled through the air into the ears.

• temperature

• vibrations

• energy

• light

Guitar and violin produce sound when the ___________ are plucked which cause the vibrations.

• column of air

• skin

• string

Organize the given options into their correct categories. Categorize the instruments below based on how they are played to produce sound.

Groups:

(a) Blowing

,

(b) Plucking

,

(c) Hitting

• 
• 
• 
• 
• 
• 

The volume of sound is measured using barometer.

• True

• False

We can muffle the sound using ear defenders.

• True

• False

The guitar is not producing a high-pitch sound. What should you do to increase the pitch?

• Play the guitar slower to increase the pitch.

• Increase the length of the string to make it produce a higher pitch.

• Tighten the string to make it vibrate faster and produce a higher pitch.

• Loosen the string to make it vibrate faster and produce a higher pitch.

Why is a wind instrument producing a low-pitch sound?

• The column of air is longer, producing a low-pitch sound.

• The column of air is shorter, producing a high-pitch sound.
  

• The air pressure is higher, producing a low-pitch sound.

A girl is ringing a bell. Which of the other four children will hear the bell the loudest?

• Girl A

• Girl B

• Boy C

• Boy D