Lesson 7 of 8 · Waves
Experiment⭐ 30 XPStanding Waves and Resonance
Standing Waves and Resonance.
🎯 Your mission
Predict it first. Then prove yourself right (or wrong).
⚡ The twist
Nature loves to surprise the careful watcher.
Mind = Blown
🔬 The more you look, the more nature shows you.
Make a hypothesis first
Before you start: write down what you think will happen, and why.
What You'll Learn
When a wave reflects and interferes with itself, fixed nodes and antinodes appear — a standing wave. Every object has natural frequencies at which this happens easily; drive it at one and the amplitude grows dramatically. That is resonance.
Key Words
Tap a word to see its definition.
Materials Needed
- vibration generator
- signal generator
- string
- pulley
- masses
Safety First
- Use a low-voltage supply and keep hands clear of the vibrating string.
Steps
Read the explanation above and note the two key terms before you start.
Fix one end of a string to a vibration generator and vary the frequency until clear loops appear. Record the frequencies that give one, two and three loops and look for the whole-number pattern.
Record what actually happened, including anything that did not match what you expected.
Write a conclusion that answers the question this lesson opened with, and state your uncertainty.
Check Your Understanding
Question 1
1 of 2A point of zero displacement on a standing wave is called a:
Where you see this in real life
This shows up in your everyday life more than you'd think.
Stretch Challenge
Try this in real life this week.
Try one experiment in real life this week — even a tiny one.
For the dinner table
“What's the most surprising thing you learned today?”
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Standing Waves and Resonance
Predict it first. Then prove yourself right (or wrong).
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