Chapter 17-3 Notes Name: The ripples visible on the bottom of the pool are caused by light shining through surface waves.

How does reflection change a wave? Chapter 17-3 Notes Name: Reflection How does reflection change a wave? Reflection occurs -

What causes the refraction of a wave when it enters a new medium? Chapter 17-3 Notes Name: Refraction What causes the refraction of a wave when it enters a new medium? Refraction is-

Chapter 17-3 Notes Name: Refraction Grass Gravel A lawnmower turns when it is pushed at an angle from the grass onto the gravel. The wheel on the gravel slows down, but the other wheel is still moving at a faster speed on the grass. Describe what is happening in your own words? Left wheel is still rolling faster on grass. Direction changes. Mower pivots because the right wheel moves more slowly when it reaches gravel.

Chapter 17-3 Notes Name: Refraction As an ocean wave approaches the shore at an angle, the wave bends, or refracts, because one side of each wave front slows down before the other side does. Describe what is happening in your own words?

Chapter 17-3 Notes Name: Refraction As an ocean wave approaches the shore at an angle, the wave bends, or refracts, because one side of each wave front slows down before the other side does. Describe what is happening in your own words?

Chapter 17-3 Notes Name: Refraction As an ocean wave approaches the shore at an angle, the wave bends, or refracts, because one side of each wave front slows down before the other side does. Describe what is happening in your own words?

An ocean wave refracts as it flows into a shallow area. Chapter 17-3 Notes Name: Refraction An ocean wave refracts as it flows into a shallow area. The shallower water can be considered a – As one side of each wave enters shallower water before the other, that side – If a wave front is-

What factors affect the amount of diffraction of a wave? Chapter 17-3 Notes Name: Diffraction What factors affect the amount of diffraction of a wave? Diffraction is-

Water waves spread out as they pass through a narrow opening. Chapter 17-3 Notes Name: Diffraction Water waves spread out as they pass through a narrow opening. The pattern produced is – Diffraction also occurs when – The larger the wavelength is-

Chapter 17-3 Notes Name: Diffraction This wave- Diffraction-

What are two types of interference? Chapter 17-3 Notes Name: Interference What are two types of interference? Interference-

Chapter 17-3 Notes Name: Interference When waves collide, they can occupy the same region of space and then continue on. Constructive interference – Destructive interference-

Constructive Interference Chapter 17-3 Notes Name: Interference Constructive Interference Two waves with equal frequencies travel in opposite directions. When a crest meets a crest, the result is a wave with an increased amplitude. Describe what is happening in your own words?

Destructive Interference Chapter 17-3 Notes Name: Interference Destructive Interference Two waves with equal frequencies travel in opposite directions. When a crest meets a trough, the result is a wave with a reduced amplitude. Describe what is happening in your own words?

What wavelengths will produce a standing wave? Chapter 17-3 Notes Name: Standing Waves What wavelengths will produce a standing wave? A standing wave is-

Interference occurs as- Chapter 17-3 Notes Name: Standing Waves Interference occurs as- At certain frequencies-

Chapter 17-3 Notes Name: Standing Waves A node is- An antinode is-

These photos show standing waves for two different frequencies. Chapter 17-3 Notes Name: Standing Waves These photos show standing waves for two different frequencies. One wavelength – Two wavelengths-

Chapter 17-3 Notes Name: Assessment Questions The property of waves bending as they pass through a narrow opening is called reflection. refraction. diffraction. destructive interference.

When does refraction of a wave occur? Chapter 17-3 Notes Name: Assessment Questions When does refraction of a wave occur? The wave cannot enter the new medium. The wave enters a new medium at any angle. The wave enters a new medium at any angle except 90°. Part of the wave enters a new medium and part is reflected.

Chapter 17-3 Notes Name: Assessment Questions A 6-meter rope is tied to a hook in the wall. Which of the following wavelengths can produce a standing wave? 1.5 m 2.5 m 3.5 m 4.5 m

Chapter 17-3 Notes Name: Assessment Questions The amount of diffraction of a wave increases as the size of the obstacle causing the diffraction decreases. True False