Final answer:
Increasing the temperature in the room where Farah is conducting her experiment involves longitudinal waves, and as a result, the speed of the wave will increase. This is because higher temperatures result in faster particle motion in the air, facilitating quicker wave propagation.
Step-by-step explanation:
If Farah increases the temperature in the room during her experiment on longitudinal waves, the speed of the wave most likely will increase. This is because in a gas, the speed of sound is affected by the temperature of the medium. As temperature increases, the particles in the air move faster and this allows sound waves to travel more quickly. Therefore, the correct answer is C)The speed of the wave will increase.
The amplitude of a wave is generally independent of the speed in a given medium and is determined by the energy of the source. Furthermore, increasing temperature does not typically affect the amplitude of a wave directly. Instead, the amplitude may decrease with distance from its source due to the spreading out of the wave's energy, not because of a temperature-driven change in speed. The energy of a wave is related to its amplitude, where a higher amplitude means a higher energy level.
The frequency of a wave is inversely related to its period, meaning that if the period of a wave increases (meaning the wave oscillates fewer times in a given timeframe), its frequency decreases, as indicated in option a. However, this relationship is independent of temperature.
Lastly, the Doppler Effect is a related phenomenon where the frequency of a wave changes due to movement relative to the wave source. For instance, if you move away from a stationary source of sound, the perceived frequency will become lower.