text: # Quick Answer: What Happens When Waves Cross A Boundary Between Air And Water?
  
  Waves change speed when they pass across the boundary between two different substances, such as light waves refracting when they pass from air to glass.
  
  This causes them to change direction and this effect is called refraction.
  
  Water waves refract when they travel from deep water to shallow water (or vice versa).
  
  ## What happens when a wave meets a boundary?
  
  Waves can and do meet boundaries in their medium. When a wave meets a boundary, it can be reflected or transmitted. Refraction occurs when a wave crosses a boundary from one medium to another. A wave entering a medium at an angle will change direction.
  
  ## How are waves refracted at a boundary?
  
  Refraction. Refraction is the change in direction of propagation of a wave when the wave passes from one medium into another, and changes its speed. Light waves are refracted when crossing the boundary from one transparent medium into another because the speed of light is different in different media.
  
  ## What happens to the speed and the wavelength of the light as it crosses the boundary in going from air into water?
  
  Question: When Light Passes From Air Into Water, The Frequency Of The Light Remains The Same. What Happens To The Speed And The Wavelength Of The Light As It Crosses The Boundary In Going From Air Into Water? Speed Remains The Same And Wavelength Remains The Same. Speed Decreases And Wavelength Increases.
  
  ## What is the boundary between 2 materials?
  
  The normal is perpendicular to the boundary between the two materials, at the point at which the light is reflected. The angle between the normal and the ray of light is known as the angle of reflection (r).
  
  ## Which is an example of reflection?
  
  Common examples include the reflection of light, sound and water waves. The law of reflection says that for specular reflection the angle at which the wave is incident on the surface equals the angle at which it is reflected.
  
  ## What happens to the wavelength of light when it passes from air to glass?
  
  Light is refracted when it crosses the interface from air into glass in which it moves more slowly. Since the light speed changes at the interface, the wavelength of the light must change, too. The wavelength decreases as the light enters the medium and the light wave changes direction.
  
  ## What is difference between reflection and refraction?
  
  In reflection, the waves bounce off the surface. On the contrary, in refraction, the waves pass through the surface, that changes their speed and direction. In reflection, the angle of incidence is same as the angle of reflection. Reflection takes place in mirrors, while refraction occurs in lenses.10 Feb 2018
  
  ## What happens when an ultrasound wave reaches a boundary between two different materials?
  
  When ultrasound waves reach a boundary between two substances with different densities, they are partly reflected back. The remainder of the ultrasound waves continue to pass through. It can measure the time it takes for an ultrasound wave to leave the source, and bounce back to the detector.
  
  ## How do electromagnetic waves travel through a vacuum?
  
  Electromagnetic waves are waves which can travel through the vacuum of outer space. This vibration creates a wave which has both an electric and a magnetic component. An electromagnetic wave transports its energy through a vacuum at a speed of 3.00 x 108 m/s (a speed value commonly represented by the symbol c).
explanation: The document contains multiple sections discussing the behavior of waves when they encounter boundaries between different mediums, such as air and water, or air and glass. It covers topics like refraction, reflection, and the changes in speed and wavelength of waves. There is one specific math-related question about what happens to the speed and wavelength of light when it passes from air into water, but no answer is provided for this question.
distilabel_metadata.content: Evaluate the user given text extract and determine if it contains a math question and optionally and answer to this question.
  
  Output rules:
  
  1. Briefly describe the document and mention if it contains a question or a question and answer.
  2. Finalize the output with: Label: no-question,question,question-and-answer,multiple-question,multiple-question-and-answer
distilabel_metadata.role: system
distilabel_metadata.content: # Quick Answer: What Happens When Waves Cross A Boundary Between Air And Water?
  
  Waves change speed when they pass across the boundary between two different substances, such as light waves refracting when they pass from air to glass.
  
  This causes them to change direction and this effect is called refraction.
  
  Water waves refract when they travel from deep water to shallow water (or vice versa).
  
  ## What happens when a wave meets a boundary?
  
  Waves can and do meet boundaries in their medium. When a wave meets a boundary, it can be reflected or transmitted. Refraction occurs when a wave crosses a boundary from one medium to another. A wave entering a medium at an angle will change direction.
  
  ## How are waves refracted at a boundary?
  
  Refraction. Refraction is the change in direction of propagation of a wave when the wave passes from one medium into another, and changes its speed. Light waves are refracted when crossing the boundary from one transparent medium into another because the speed of light is different in different media.
  
  ## What happens to the speed and the wavelength of the light as it crosses the boundary in going from air into water?
  
  Question: When Light Passes From Air Into Water, The Frequency Of The Light Remains The Same. What Happens To The Speed And The Wavelength Of The Light As It Crosses The Boundary In Going From Air Into Water? Speed Remains The Same And Wavelength Remains The Same. Speed Decreases And Wavelength Increases.
  
  ## What is the boundary between 2 materials?
  
  The normal is perpendicular to the boundary between the two materials, at the point at which the light is reflected. The angle between the normal and the ray of light is known as the angle of reflection (r).
  
  ## Which is an example of reflection?
  
  Common examples include the reflection of light, sound and water waves. The law of reflection says that for specular reflection the angle at which the wave is incident on the surface equals the angle at which it is reflected.
  
  ## What happens to the wavelength of light when it passes from air to glass?
  
  Light is refracted when it crosses the interface from air into glass in which it moves more slowly. Since the light speed changes at the interface, the wavelength of the light must change, too. The wavelength decreases as the light enters the medium and the light wave changes direction.
  
  ## What is difference between reflection and refraction?
  
  In reflection, the waves bounce off the surface. On the contrary, in refraction, the waves pass through the surface, that changes their speed and direction. In reflection, the angle of incidence is same as the angle of reflection. Reflection takes place in mirrors, while refraction occurs in lenses.10 Feb 2018
  
  ## What happens when an ultrasound wave reaches a boundary between two different materials?
  
  When ultrasound waves reach a boundary between two substances with different densities, they are partly reflected back. The remainder of the ultrasound waves continue to pass through. It can measure the time it takes for an ultrasound wave to leave the source, and bounce back to the detector.
  
  ## How do electromagnetic waves travel through a vacuum?
  
  Electromagnetic waves are waves which can travel through the vacuum of outer space. This vibration creates a wave which has both an electric and a magnetic component. An electromagnetic wave transports its energy through a vacuum at a speed of 3.00 x 108 m/s (a speed value commonly represented by the symbol c).
distilabel_metadata.role: user
distilabel_metadata.raw_output_q_a_detector_0: The document contains multiple sections discussing the behavior of waves when they encounter boundaries between different mediums, such as air and water, or air and glass. It covers topics like refraction, reflection, and the changes in speed and wavelength of waves. There is one specific math-related question about what happens to the speed and wavelength of light when it passes from air into water, but no answer is provided for this question.
  
  Label: multiple-question-and-answer