Wavelength

Wavelength is an important concept in the study of light and sound. It refers to the distance between successive crests of a wave, especially those of sound or light. It is denoted by the Greek letter lambda (λ) and is typically measured in meters.

Light Wavelength

For light, different colors correspond to different wavelengths. The visible light spectrum ranges from approximately 400 nanometers (violet) to 700 nanometers (red). Shorter wavelengths are associated with higher energy (e.g., ultraviolet light), while longer wavelengths are associated with lower energy (e.g., infrared light).

Sound Wavelength

In the context of sound, wavelength is related to the pitch of the sound. Higher frequency sounds have shorter wavelengths, while lower frequency sounds have longer wavelengths. For example, a high-pitched whistle produces waves with shorter wavelengths compared to a deep bass sound.

Study Guide

1. What is wavelength?
2. How is wavelength related to the color of light?
3. Describe the relationship between wavelength and pitch in sound waves.
4. What unit is used to measure wavelength?
5. Give an example of a high-energy light wave and a low-energy light wave based on their wavelengths.

[Wavelength] Related Worksheets and Study Guides:

• All about sound and lightScience • Second Grade