KS3 Light consolidation

Light travels in a straight line.

• true

• false

What does reflection mean?

• 
  It is when the light changes the material and the direction of it changes as well. 

• 
  It is when the material is rebounding the light.

Which explains why the fork looks different under water?

• 
  light can't pass through the glass

• 
  the wavelength of light lengthens

• the amount of light increases when going through water

• light is refracted at an angle

Smooth surfaces _______ a lot of light.

• 
  reflect

• 
  absorb

• 
  bend

• 
  twist

Another name for light bending is ....

• 
  Reflaction

• 
  Refraction

• 
  Absorbing

• 
  mirror

The Law of Reflection:
The angle of incidence is _________ the angle of reflection

• 
  smaller than

• 
  bigger than

• 
  the same as

• none of them is correct

Light is unable to pass through ________________ objects

• 
  blunt

• dark

• 
  opaque

• 
  

  coloured

The image on the retina is ________ which means upside down

What does the iris do?

• 
  sends messages to the brain

• 
  

  helps the eye focus

• 
  transmits light rays to retina

• 
  regulates how much light enters the eye through the pupil

What happens in low light to help you see better?

• 
  

  Your pupil gets smaller

• 
  Your retina gets bigger

• 
  

  Your pupil gets bigger

• 
  Your retina gets smaller