Educational worksheet on wave properties and frequency with diagrams and questions.

Let's solve this Waves Worksheet #2 step by step, explaining each part clearly.

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Part 1: Labeling the Wave Diagram

The first diagram shows a transverse wave with labeled points A through F. Let's identify what each letter represents:

- A: Crest – The highest point of the wave.
- B: Wavelength – The distance from one crest to the next (or trough to trough).
- C: Amplitude – The height from the rest position to the crest (maximum displacement).
- D: Trough – The lowest point of the wave.
- E: Wavelength – Another way to measure wavelength, from trough to trough.
- F: Amplitude – The distance from the rest position to the trough (same as C in magnitude).

✔ So the answers are:
- A: Crest
- B: Wavelength
- C: Amplitude
- D: Trough
- E: Wavelength
- F: Amplitude

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Part 2: Frequency Questions

Now we analyze Wave 1, Wave 2, and Wave 3.

#### Wave 1:
- Shows 2 full cycles (from start to end).
- Each cycle = 1 wavelength.
- So, Wave 1 is 2 wavelengths long.

#### Wave 2:
- Shows 3 full cycles.
- So, Wave 2 is 3 wavelengths long.

#### Wave 3:
- Shows 1 full cycle.
- So, Wave 3 is 1 wavelength long.

Now, let’s answer the questions:

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1. How many wavelengths long is Wave 1?
→ 2 wavelengths

2. How many wavelengths long is Wave 2?
→ 3 wavelengths

3. How many wavelengths long is Wave 3?
→ 1 wavelength

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4. Which wave has the highest frequency?
→ Frequency is how many waves pass a point per second. It's related to how many wavelengths fit in a given space or time.
- Wave 2 has 3 wavelengths in the same horizontal length as the others → more waves → higher frequency.
→ Wave 2 has the highest frequency.

5. Which wave has the lowest frequency?
→ Wave 3 has only 1 wavelength → fewer waves → lower frequency.
→ Wave 3 has the lowest frequency.

6. What is the definition of frequency?
→ Frequency is the number of waves that pass a fixed point per unit of time.
It is measured in Hertz (Hz), which means waves per second.

7. How can you tell by looking at it if a wave has high or low frequency?
→ High frequency waves have more waves (cycles) packed into the same space, so they are closer together (shorter wavelength).
→ Low frequency waves have fewer waves, so they are spread out (longer wavelength).
So:
- Tighter waves = higher frequency
- Wider spaced waves = lower frequency

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Part 3: Frequency Connection – Voice Matching

We're told:
- Dad: deep, low voice → low frequency
- Mom: medium-high voice → medium frequency
- Baby: highest voice → high frequency

Now match the waves:

- Wave 1: 2 wavelengths → medium frequency
- Wave 2: 3 wavelengths → highest frequency
- Wave 3: 1 wavelength → lowest frequency

So:
- Lowest frequency (dad) → Wave 3
- Medium frequency (mom) → Wave 1
- Highest frequency (baby) → Wave 2

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✔ Final Answers:

A: Crest
B: Wavelength
C: Amplitude
D: Trough
E: Wavelength
F: Amplitude

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Frequency Section:

1. Wave 1: 2 wavelengths
2. Wave 2: 3 wavelengths
3. Wave 3: 1 wavelength
4. Highest frequency: Wave 2
5. Lowest frequency: Wave 3
6. Definition: Frequency is the number of waves passing a point per second.
7. High frequency: more waves close together; low frequency: fewer, spread-out waves.

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Frequency Connection:

8. Dad’s voice (low): Wave 3
9. Mom’s voice (medium-high): Wave 1
10. Baby’s voice (high): Wave 2

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✔ Summary of Answers:

| Question | Answer |
|--------|--------|
| A | Crest |
| B | Wavelength |
| C | Amplitude |
| D | Trough |
| E | Wavelength |
| F | Amplitude |
| 1 | 2 wavelengths |
| 2 | 3 wavelengths |
| 3 | 1 wavelength |
| 4 | Wave 2 |
| 5 | Wave 3 |
| 6 | Number of waves per second |
| 7 | High freq: waves close together; low freq: waves far apart |
| 8 | Wave 3 |
| 9 | Wave 1 |
| 10 | Wave 2 |

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