Sound — true or false?

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   Sound is a longitudinal wave.

2. Statement is true

   No

   Statement

   Sound can travel through vacuum.

3. Statement is true

   Yes

   Statement

   Speed of sound in air is approximately 343 m/s at room temperature.

4. Statement is true

   Yes

   Statement

   Frequency of audible sound is roughly 20 Hz to 20 kHz.