Medium Grade 4 worksheet on wave properties: wavelength, amplitude, frequency, crests, and troughs. Nine fill-ins and a four-pair matching task connect terms to definitions on wave diagrams for both sound and light, anchoring the NGSS 4-PS4 vocabulary needed for harder activities later. Students apply wavelength, amplitude, and frequency vocabulary to real instruments and color spectra while completing fill-in items and a matching activity in Grade 4.
Style:
Waves: Light and Sound
Part A: Fill in the Blank
Write the missing word or number on each line.
1. The distance from one wave peak to the next peak is called the wavelength.
2. The height of a wave from the middle line up to the top is called the amplitude.
3. The number of waves that pass a point in one second is the wave's frequency.
4. A drum hit very softly makes a sound wave with a small amplitude, so the sound is quiet.
5. A flute note that is very high in pitch has a higher frequency than a low tuba note.
6. Two sound waves with the same wavelength but different amplitudes will sound the same in pitch but different in volume.
7. On a wave diagram, the lowest point of the wave is called a trough.
8. Light waves that have a short wavelength and high frequency look more blue to our eyes.
9. When a vibration sends out energy that travels through air or water, that moving energy is called a wave.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Wavelength
→ Distance from one peak to the next peak
Distance from one peak to the next peak
Amplitude
→ Height of the wave from middle to top
Height of the wave from middle to top
Frequency
→ Number of waves per second
Number of waves per second
Crest
→ The very top point of a wave
The very top point of a wave
Waves: Light and Sound
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) The distance from one wave peak to the next peak is called the wavelength.
2) The height of a wave from the middle line up to the top is called the amplitude.
3) The number of waves that pass a point in one second is the wave's frequency.
4) A drum hit very softly makes a sound wave with a small amplitude, so the sound is quiet.
5) A flute note that is very high in pitch has a higher frequency than a low tuba note.
6) Two sound waves with the same wavelength but different amplitudes will sound the same in pitch but different in volume.
7) On a wave diagram, the lowest point of the wave is called a trough.
8) Light waves that have a short wavelength and high frequency look more blue to our eyes.
9) When a vibration sends out energy that travels through air or water, that moving energy is called a wave.
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each item to its correct answer.
Wavelength
→ Distance from one peak to the next peak
Distance from one peak to the next peak
Amplitude
→ Height of the wave from middle to top
Height of the wave from middle to top
Frequency
→ Number of waves per second
Number of waves per second
Crest
→ The very top point of a wave
The very top point of a wave
Ready to Practice?
Complete each section carefully.
10 Questions
10-15 minutes
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