Polls close in Belarus parliamentary election

What is the primary function of a whistle?

• To produce a loud sound

• To create a musical tune

• To emit a silent signal

• To generate a soft hum

How does a whistle produce sound?

• By using electronic signals

• By striking a surface

• By blowing air through a narrow opening

• By vibrating strings

What is a key characteristic of the sound produced by a whistle?

• It is very low-pitched

• It is inaudible

• It is high-pitched and sharp

• It is a continuous hum

Which of the following is a common use of a whistle?

• Cooking

• Writing

• Signaling in sports

• Painting

In which scenario might a whistle be used?

• During a concert

• In a quiet library

• On a sports field

• In a movie theater