Y5 Science: Volume of Sound Quiz

What is the function of an amplifier?

• It captures sound and turns it into electrical signals

• It makes electrical signals weaker

• It makes electrical signals stronger to increase volume

• It turns sound into vibrations

Which of the following materials is best at muffling sound?

• Metal

• Cotton wool

• Plastic

• Glass

What are two ways to make a bell sound louder?

Why does sound become quieter when the source is further from your ear?

Earmuffs and earplugs do not change the volume of sound but help by (a)   how much sound reaches our ears.

Volume is a measure of how ______ or ______ a sound is.

• loud

• quiet

In an experiment, students tested how different materials muffled sound using the same sound source and sound level meter. What is the independent variable, dependent variable, and control variable?

Why is using the same distance from the sound source important in a sound experiment?

What does a loudspeaker do?

• Changes sound into electrical signals

• Makes electrical signals weaker

• Turns electrical signals back into louder sound

• Reduces noise pollution

Which of the following would NOT be considered noise pollution?

• Loud music late at night

• People shouting

• The ticking of a small clock

• Roadworks and drills