Question

what is the frequency of a wave?
the height of the wave.
the number of times the wave repeats in one second.
the color of the wave.
the shape of the wave.
question 7 (1 point)
listen
the longer the wavelength of a wave, the higher the frequency.
true
false

Explanation:

• First question: Frequency is defined as the number of times a wave repeats in one second. The height of a wave is amplitude, color is not a property related to frequency in this context, and shape is also not the definition of frequency.
• Second question: The relationship between wavelength ($\lambda$) and frequency ($f$) is given by the formula $c = \lambda f$ (where $c$ is the speed of the wave, a constant in a given medium). Rearranging for $f$ gives $f=\frac{c}{\lambda}$. This shows an inverse relationship. So, longer wavelength means lower frequency.

Answer:

• First question: The number of times the wave repeats in one second.
• Second question: False