Judge these claims about sound waves

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 roughly 343 m/s at room temperature.

4. Statement is true

   Yes

   Statement

   Audible range for humans is roughly 20 Hz to 20 kHz.

5. Statement is true

   No

   Statement

   Echo occurs when reflected sound returns within 0.05 s.

Instructions

Tap true or false for each line on how sound travels and what ears can pick up.