Sound Waves exercise - Free Printable

Let’s solve this step by step.

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## 🎵 PART 1: MATCH THE SOUND WAVE WITH ITS PROPER NAME

We need to match each wave (A, B, C, D) with the correct description based on two properties:

- Loudness → determined by amplitude (height of the wave).
➤ *Taller wave = Louder sound*
➤ *Shorter wave = Softer sound*

- Pitch → determined by frequency (how many waves in a given time — here, 1 second).
➤ *More waves per second = Higher pitch*
➤ *Fewer waves per second = Lower pitch*

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🔍 Analyze Each Wave:

#### ➤ Wave A:
- Amplitude: Small → Soft sound
- Frequency: About 2.5 cycles in 1 sec → Low frequency → Low pitch

✔ Matches: Soft sound, Low Pitch

#### ➤ Wave B:
- Amplitude: Large → Loud sound
- Frequency: About 2 cycles in 1 sec → Low frequency → Low pitch

✔ Matches: Loud Sound, Low Pitch

#### ➤ Wave C:
- Amplitude: Large → Loud sound
- Frequency: About 4.5 cycles in 1 sec → High frequency → High pitch

✔ Matches: Loud Sound, High Pitch

#### ➤ Wave D:
- Amplitude: Very small → Soft sound
- Frequency: About 3.5 cycles in 1 sec → Higher frequency → High pitch

✔ Matches: Soft sound, High Pitch

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✔ Final Matching:

- A → Soft sound, Low Pitch
- B → Loud Sound, Low Pitch
- C → Loud Sound, High Pitch
- D → Soft sound, High Pitch

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## 📐 PART 2: LABEL THE DIAGRAM

We are given a diagram of a tuning fork producing a sound wave, and we must label parts using these words:

> sound, amplitude, through, wavelength, crest, vibration

Let’s identify what each arrow/blank is pointing to:

1. Top left arrow pointing to the tuning fork vibrating:
➤ This shows the source of the sound — the vibration of the fork.

2. Arrow pointing to the highest point of the wave:
➤ That’s the crest.

3. Arrow pointing to the distance between two crests (or troughs):
➤ That’s the wavelength.

4. Arrow pointing to the height from center line to crest (or trough):
➤ That’s the amplitude.

5. Blank near the tuning fork showing how sound travels:
➤ Sound travels through air (or medium).

6. Blank under the entire wave pattern:
➤ The whole thing represents sound waves.

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✔ Final Labels (from top to bottom, left to right):

1. Vibration (tuning fork moving)
2. Crest (top of wave)
3. Wavelength (distance between crests)
4. Amplitude (height of wave)
5. Through (how sound travels)
6. Sound (the wave itself)

*(Note: Depending on exact placement in your worksheet, labels may vary slightly — but this is the standard labeling for such diagrams.)*

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## 🧾 FINAL ANSWERS TO WRITE ON WORKSHEET:

Part 1 – Match letters to descriptions:

- A → SOFT SOUND, LOW PITCH
- B → LOUD SOUND, LOW PITCH
- C → LOUD SOUND, HIGH PITCH
- D → SOFT SOUND, HIGH PITCH

Part 2 – Label Diagram:

From top to bottom, left to right (based on common layout):

1. VIBRATION
2. CREST
3. WAVELENGTH
4. AMPLITUDE
5. THROUGH
6. SOUND

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✔ You’re all set! Just write the capital letters and labels as shown above.