# Practice Page

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### 901-B: Transverse vs. Longitudinal Waves

• Topic Cluster: Waves
• Topic: Wave Structure
• Objective: Differentiate between pictures and examples of transverse and longitudinal waves.
• Content: All waves can be categorized as either transverse or longitudinal waves.
• Level: 1

#### Transverse and Longitudinal waves in a Slinky:

A transverse wave looks like moving crests and troughs.

A longitudinal wave looks like a moving compression.

1. Is wave (a) a transverse or a longitudinal wave?
2. Is wave (b) a transverse or a longitudinal wave?

#### Making Waves

To make a transverse slinky wave, move the slinky side-to-side OR up-and-down.

1. I stretch a slinky out in the hallway, and shake it left to right. What kind of wave do I make?
2. I stretch a slinky out in the hallway, and pluck it. What kind of wave do I make?
3. I stretch a slinky out in the hallway, and move it quickly in and out. What kind of wave do I make?
4. I stretch a slinky out in the hallway, and shake up and down. What kind of wave do I make?
5. How can you make a transverse wave with a slinky?
6. How can you make a longitudinal wave with a slinky?

#### More Transverse and Longitudinal Waves

##### Rules:
• All electromagnetic waves are transverse. This includes light waves.
• Mechanical waves can be either transverse or longitudinal.
• Sound waves (which are a type of mechanical wave) are always longitudinal.

For each wave, state if it is transverse or longitudinal.

1. A sound wave.
2. A light wave.
3. Any electromagnetic wave.
4. An ultrasonic wave (a sound wave with a frequency higher than humans can hear)
5. An ultraviolet wave.