KS3 Science Quiz Light and Sound

What does the amplitude of a wave describe?

• The speed at which the wave travels.
  
  

• The maximum amount of vibration from the middle position of the wave.

• The time it takes for one wave to pass a point.

• The number of waves passing a point in one second.

What is the angle of incidence?

• The angle between the incident ray and the normal.
  
  

• The angle between the reflected ray and the normal.

• The angle at which light bends through a prism.

• The angle between a wave and the surface it strikes.

What does auditory range refer to?

• The number of sound waves produced per second.
  
  

• The speed at which sound travels.

• The lowest and highest frequencies that an animal can hear.

• The pitch of sound that an animal prefers

What happens when light undergoes dispersion?

• Light is absorbed by the material it passes through.
  
  

• Different colours of light are spread out when passing through a prism.

• Light bounces off a surface.

• Light slows down in a vacuum.

What is an echo?

• A sound that is absorbed by a surface.
  
  

• A wave that travels through a vacuum.

• The reflection of sound waves from a surface back to the listener.
  
  

• 1. The bending of sound waves through a medium.

What is an incident ray?

• The incoming ray of light or sound.

• The ray of light that bounces off a surface.
  
  

• The angle between the reflected ray and the normal.

• A ray that passes through a prism.

What is a longitudinal wave?

• A wave where the vibration direction is perpendicular to the wave’s direction.

• A wave where the vibration direction is the same as the wave’s direction.
  
  

• A type of wave that does not need a medium to travel.
  
  

• A wave that changes direction when it encounters a new material.

What is pitch in terms of sound?

• The speed at which sound waves travel through a medium.

• How low or high a sound is. A low pitch sound has a high frequency.

• The measure of how loud a sound is.
  
  

• The distance between the peaks of sound waves.

What is the retina?

• A layer at the back of the eye with cells that detect light and form images.
  
  

• The transparent layer at the front of the eye that refracts light.
  
  

• The muscle that controls the shape of the lens in the eye.
  
  

• The part of the eye responsible for producing the optic nerve.

What is vibration?

• A measure of how loud a sound is.

• A movement of light particles.

• A back and forth motion that repeats.

• A wave that travels in a vacuum.