5.1 Visible Light

• What determines the color of visible light?

  Wavelength
• Match the color of visible light with its approximate wavelength range.

  Red ↔️ 625-740 nm

  Orange ↔️ 590-625 nm

  Yellow ↔️ 565-590 nm

  Green ↔️ 500-565 nm

  Blue ↔️ 450-500 nm

  Indigo ↔️ 430-450 nm

  Violet ↔️ 380-450 nm
• What determines the color we perceive in visible light?

  Wavelength
• White light is a composite of all colors in the visible spectrum
• Visible light is the portion of the electromagnetic spectrum that humans can see
• Order the colors of visible light from longest to shortest wavelength.

  1️⃣ Red

  2️⃣ Orange

  3️⃣ Yellow

  4️⃣ Green

  5️⃣ Blue

  6️⃣ Indigo

  7️⃣ Violet
• Match the color with its approximate wavelength range in nanometers:

  Red ↔️ 625-740

  Blue ↔️ 450-500

  Green ↔️ 500-565

  Violet ↔️ 380-450
• Name three types of lighting that use visible light for illumination.

  Incandescent, fluorescent, LED
• The wavelength of visible light determines the color we perceive.


  True
• When all colors of the visible spectrum combine, they produce the effect we perceive as white light.
• What causes refraction of light when it passes from one medium to another?

  The change in speed
• Mirrors and shiny surfaces are examples of reflection of light.
• The range of wavelengths of visible light is approximately 400 nm to 700 nm
• Visible light is part of the electromagnetic spectrum
• Arrange the colors of visible light in order from longest to shortest wavelength.

  1️⃣ Red

  2️⃣ Orange

  3️⃣ Yellow

  4️⃣ Green

  5️⃣ Blue

  6️⃣ Indigo

  7️⃣ Violet
• The visible light range of the electromagnetic spectrum is approximately 400 nm to 700 nm
• What colors combine to form white light?

  All colors in spectrum
• What is the approximate wavelength range of visible light?

  400 nm to 700 nm
• Visible light consists of a single color with a single wavelength.

  False
• What property of visible light determines the color we perceive?

  Wavelength
• Reflection occurs when light bounces back from a surface
• What role does visible light play in human vision?

  Enables perception of color
• What is the wavelength range in nanometers for visible light?

  400 nm to 700 nm
• What is the range of wavelengths of visible light in nanometers?

  400 nm to 700 nm
• Red light has a shorter wavelength than blue light.

  False
• What are the primary colors of white light?

  All colors in the visible spectrum
• What is visible light defined as?

  Part of electromagnetic spectrum
• White light is composed of a single wavelength.

  False
• What are two properties of light discussed in the study material?

  Reflection and refraction
• Visible light ranges from 380 nm to 700 nm.

  False
• Red light has a shorter wavelength than blue light.

  False
• The wavelength of visible light ranges from 400 nm to 700 nm.

  True
• What is the approximate range of wavelengths in nanometers for visible light?

  400 nm to 700 nm
• White light is composed of all colors in the visible spectrum.


  True
• Refraction involves the bending of light as it changes speed when passing through different media.


  True
• Optical devices like mirrors use reflection to change the direction of light
• The wavelength of visible light determines the color we perceive.
• What is the definition of reflection in light?

  The bouncing back of light
• Lenses in eyeglasses use refraction to focus light.


  True
• Visible light is the only part of the electromagnetic spectrum that humans can see.


  True