Voice and Gas Effects Quiz

What is the classic party trick involving helium?

• Performing magic tricks

• Creating a firework display

• Inflating balloons

• Making your voice sound like Daffy Duck

What is the primary function of the vocal cords?

• To produce sound by vibrating

• To amplify sound

• To filter air entering the lungs

• To protect the larynx

How does helium affect the sound of your voice?

• It makes the voice inaudible

• It lowers the pitch

• It amplifies higher frequencies

• It has no effect

What is the effect of sulfur hexafluoride on your voice?

• It amplifies lower frequencies

• It raises the pitch

• It has no effect

• It makes the voice sound robotic

Why does the pitch of your voice remain unchanged when inhaling different gases?

• Because the vocal cords stop vibrating

• Because the gases are too light

• Because the vocal cords vibrate at the same rate

• Because the gases are absorbed by the body