P5.3 Wave Interaction

• What is reflection in wave interactions?

  Wave bounces back
• What happens to a wave during refraction?

  Wave bends as it passes mediums
• In reflection, the frequency and wavelength of the wave remain unchanged.

  True
• In refraction, the wave's speed and wavelength can change, but the frequency remains constant.

  True
• In refraction, a wave's speed and wavelength can change.

  True
• Diffraction is the bending of waves around obstacles
• Refraction bends waves due to changes in refractive index

  True
• Constructive interference results in higher wave intensity
• Destructive interference occurs when crests align with troughs of waves


  True
• Match the wave interaction with its definition:

  Reflection ↔️ Wave bounces back off a surface

  Refraction ↔️ Wave bends as it passes between mediums

  Diffraction ↔️ Wave bends around an obstacle
• Refraction is caused by a difference in refractive index
• Match the type of interference with its definition:

  Constructive Interference ↔️ Waves combine to increase amplitude

  Destructive Interference ↔️ Waves combine to decrease amplitude
• Diffraction is used in holography to produce 3D images
• What is diffraction in wave interactions?

  Wave bends around obstacles
• What is superposition in wave interactions?

  Waves combine to form new wave
• Refraction is the bending of waves as they pass between mediums
• What is superposition in waves?

  Combining two or more waves
• Destructive interference decreases the wave's intensity
• What happens to the angle of reflection compared to the angle of incidence?

  They are equal
• Why does refraction occur when a wave moves between mediums?

  Wave speed changes
• Match the property with the correct wave interaction:

  Wave bends as it passes between mediums ↔️ Refraction

  Wave bounces back at the same angle ↔️ Reflection
• The extent of diffraction depends on the wavelength and size of the obstacle.


  True
• Reflection is used in mirrors to create clear images
• Interference is used in fiber optics to transmit signals
• In reflection, the angle of reflection is equal to the angle of incidence
• Refraction occurs because the wave's speed changes when it moves between mediums.
• The extent of diffraction depends on the wave's wavelength and the size of the opening
• In superposition, constructive interference occurs when waves combine to increase their amplitude
• Diffraction causes waves to bend and spread


  True
• Constructive interference increases the wave's amplitude
• Constructive interference occurs when crests align with troughs of waves

  False
• During reflection, the wave's frequency and wavelength remain unchanged
• During refraction, the wave's frequency remains constant.


  True
• What causes diffraction to occur?

  Waves spread out
• Diffraction bends waves around obstacles, while refraction bends waves as they pass between mediums
• Refraction is used in eyeglasses to correct vision
• Match the wave interaction with its application:

  Reflection ↔️ Mirrors

  Refraction ↔️ Lenses

  Diffraction ↔️ CD players

  Interference ↔️ Noise-cancelling headphones