Question
C. the light is reflected around the moon
D. sound waves don't travel in straight lines
5. Which of the following arrangement of media is the speed of sound increasing?
A. wood, water, air
C. metal, alcohol, air
B. air, oil, ice
D. air, water, ice
6. Which of the following statements) is/are TRUE?
1. Sound travels faster in humid air than in dry air.