GL practice - Sound

Raj plays a trumpet. The sound is mostly carried to Raj’s ears through..

• the trumpet

• Raj’s arms

• Raj’s head

• the air

The triangle makes a sound when it is hit because the triangle..

• produces electricity

• evaporates

• freezes

• vibrates

Adam hits a drum once. When Adam hits the drum again with less force, the sound is..

• quieter

• louder

• lower in pitch

• higher in pitch

Li cuts four pipes to different lengths. She blows across the top of each pipe in the same way. The sound that each pipe makes..

• is exactly the same

• is a different pitch

• is the same pitch

• is a different volume

Lily is listening to the radio. When she moves away from the radio, the sound changes. Which graph shows the volume of the sound Lily hears as she walks away from the radio.

• A

• B

• C

• D

The graph shows the time sound takes to travel through different materials. The information in the graph supports only some of the conclusions below. Decide if each conclusion is true or false.

Tom ties some string tightly between two posts. When Tom plucks the string it makes a sound. Tom wants the string to make a higher sound. What should Tom do?

• pluck the string more gently

• make the posts taller

• make the string shorter

• change the direction of the posts

When Lily speaks into a cup. Hiroki can hear what Lily says. If the length of the string was increased, Hiroki would find that Lily’s voice sounded..

• Louder

• Quieter

• Higher

• Lower