If the sound waves wore to travel the same distance through AIR instead of Wed how would this affect each of the following? Choose from: INCREASE, DECREASE or REMAINS THE SAME 7.4.1 The time taken for the sound wave to return to the receiver. Glve a reason. 7.4.2 The frequency of the sound.

When sound waves travel through different media, properties like speed, time taken, and frequency can be affected based on the characteristics of the medium. Here's how traveling through **AIR** instead of **WOOD** impacts the following: ### 7.4.1 The time taken for the sound wave to return to the receiver. **Answer:** **INCREASES** **Reason:** Sound travels **slower** in air compared to wood. In wood, the speed of sound is typically around 3300 m/s, whereas in air, it's approximately 343 m/s at room temperature. Since the speed is lower in air, it takes **more time** for the sound wave to cover the same distance and return to the receiver. ### 7.4.2 The frequency of the sound. **Answer:** **REMINS THE SAME** **Reason:** The **frequency** of a sound wave is determined by the **source** of the sound and remains **unchanged** as it passes from one medium to another. While the **speed** and **wavelength** of the sound may vary between air and wood, the frequency remains constant because it is an intrinsic property of the sound wave emitted by the source. --- **Summary:** 1. **Time Taken:** **Increases** because sound travels slower in air. 2. **Frequency:** **Remains the Same** as it is determined by the sound source. Problem 7.4.1 Answer: **INCREASES**—because sound travels more slowly in air, it takes more time to return. Problem 7.4.2 Answer: **REMINS THE SAME**—the sound’s frequency is unchanged when traveling through air instead of wood.