True or false: sound

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   A forward moving piston produces a compression.

2. Statement is true

   Yes

   Statement

   A backward moving piston produces a rarefaction.

3. Statement is true

   No

   Statement

   In a compression the density is lower than average.

4. Statement is true

   Yes

   Statement

   An oscillating piston produces alternate compressions and rarefactions.

Instructions

Decide whether each statement about sound is true or false.

Explanation