8th Grade Unit 4 Lesson 12

A lens is

• a flat surface that you cannot see through

• a curved transparent object that bends light in specific ways

  
  

• a flat transparent piece of plastic

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NGSS.MS-PS4-2

A light ray is

• a straight arrow that represents the direction a light wave travels

  
  

• a curvy line that shows the waves of the light spectrum

• a way to show how much light is being absorbed

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NGSS.MS-PS4-2

Which statement describes a light wave?

• a model of light that only shows refracrion

• a way to make light shake and change

• a model of light that explains why light carries energy, reflects, refracts, and can be absorbed or transmitted similarly to a mechanical wave

  
  

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NGSS.MS-PS4-2

What is the electromagnetic spectrum?

• the range of frequencies and wavelengths of all light waves

  
  

• a spectrum that tell you how much light is absorbed

• the rainbow

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What does light intensity mean?

• how much light you see through a lens

• the colors of the light in a lightbulb

• the range of frequencies and wavelengths of all light waves

  
  

What is visible light?

• a spectrum of lights that is used for light shows

• a part of the electromagnetic spectrum in which light waves within a certain range of frequencies can be detected by the human eye

  
  

• part of the electromagnetic spectrum that is not detectable by human eyes

Which statement describes absorption?

• Absorption is the process of releasing something into the environment
• Absorption is the process of turning something into a solid state
• Absorption is the process of taking in or soaking up something, such as a liquid or energy.

Tags

NGSS.MS-PS4-2

Which statement describes transmission best?

• The process of sending or passing on something, such as a message or disease, from one person, place, or thing to another.
• The process of eliminating something completely
• The process of creating something new

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NGSS.MS-PS4-2

Which statement describes reflection best?

• The absorption of light by an object
• as in casting back a light or heat, mirroring, or giving back or showing an image

• The process of bending light as it passes through a medium

Tags

NGSS.MS-PS4-2

What does refraction mean?

• The color of the light changes
• The speed of light increases
• The bending of light as it passes from one medium to another

Tags

NGSS.MS-PS4-2