Question

1. sound waves travel the fastest through materials in which the molecules are tightly p

through which of these would sound waves travel the slowest?

air
glass
metal
water

Explanation:

Step1: Recall sound - wave speed in different states

Sound travels fastest in solids (molecules are tightly packed), slower in liquids, and slowest in gases.

Step2: Classify the given substances

Metal and glass are solids, water is a liquid, and air is a gas.

Answer:

air