Question

in the diagram of a wave below, what does the red arrow represent? * 2 points
wave diagram
frequency
amplitude
wavelength
line of origin
which wave below will have the longest wavelength? * 2 points
three wave diagrams labeled wave a, wave b, wave c
wave a
wave b
wave c
all waves have an equal wavelength

Explanation:

First Sub - Question (Wave Diagram Red Arrow)

Step1: Recall Wave Terms

• Frequency: Number of waves per unit time.
• Amplitude: Maximum displacement from rest position.
• Wavelength: Distance between two consecutive identical points (e.g., troughs, crests) on a wave.
• Line of Origin: The rest position line.

Step2: Analyze Red Arrow

The red arrow is between two consecutive troughs, which is the distance between two identical points on the wave. So it represents wavelength.

Step1: Recall Wavelength Concept

Wavelength is the distance between two consecutive identical points (e.g., crests or troughs) on a wave. A longer wavelength means the distance between these points is greater, so the wave has fewer cycles (oscillations) over a given length.

Step2: Compare the Waves

• Wave A: Has many cycles (oscillations) in the given length, so short wavelength.
• Wave B: Has more cycles than Wave C.
• Wave C: Has the fewest cycles (oscillations) in the given length, so the distance between consecutive identical points (wavelength) is the longest.

Answer:

The option with "Wavelength" (the one with the filled - in circle in the original, but as per the format, we present the option: The option corresponding to Wavelength (the third option in the first question's options list: Wavelength)).

Second Sub - Question (Longest Wavelength Wave)