Standing Waves Guide

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Standing wave diagram showing nodes and antinodes

📚 Part 1: Understanding Standing Waves

1. What is a standing wave?

A wave that travels in one direction only

A wave pattern that appears stationary due to interference

A wave that moves very slowly

A wave that bounces off walls

2. Which of these are features of standing waves? (Select all that apply)

Nodes (points of no movement)

Antinodes (points of maximum movement)

Constant wavelength

Energy travelling in both directions

3. Resonance occurs when:

The frequency matches the object's natural frequency

The wave amplitude is very large

Two waves cancel each other out

The wave speed increases

4. In your rope experiment, standing waves were clearest at certain frequencies because:

🧪 Part 2: Analysing Your Experiment

5. From your rope experiment, record your measurements:

Rope length: _______ metres

Number of nodes in fundamental frequency: _______

Number of oscillations counted: _______ (in 10 seconds)

Estimated wavelength: _______ metres

6. Draw and label a standing wave pattern showing nodes (N) and antinodes (A):

7. Explain how increasing the frequency affected the standing wave pattern you observed:

8. Give two real-world examples where standing waves or resonance are important:

Example 1: _________________________________

Example 2: _________________________________

🎵 Part 3: Connections and Applications

9. How might traditional Māori instruments (taonga pūoro) use the principles of resonance?

10. The Tacoma Narrows Bridge disaster (1940) was caused by resonance. Explain why engineers need to understand standing waves when designing bridges:

11. Extension Challenge: If you double the tension in a rope, predict what would happen to the standing wave pattern and explain your reasoning:

Standing Waves Guide

Standing Waves Guide

📚 Part 1: Understanding Standing Waves

🧪 Part 2: Analysing Your Experiment

🎵 Part 3: Connections and Applications

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