Science
Waves, Light & Sound
Conceptual
11–12 yrs
Wave Properties & Types
波的属性与类型
Description
Describe waves in terms of amplitude, wavelength, frequency, and wave speed; distinguish transverse waves (oscillation perpendicular to direction of travel) from longitudinal waves (oscillation parallel); and use the wave equation v = fλ
Mastery Evidence
- Labels a wave diagram with amplitude, wavelength, crest, and trough
- Distinguishes transverse and longitudinal waves and gives an example of each
- Uses v = fλ to calculate wave speed, frequency, or wavelength given the other two
- Explains what happens to wavelength if frequency increases while wave speed stays constant
Assessment Prompt
If your child was asked to describe a wave and how fast it travels, could they sketch one, label the wavelength and amplitude, and use the wave equation to work out speed from the frequency and wavelength?
