Cambridge Stage 8 Science Unit 6 Revision quiz

What does the law of reflection state?

• The angle of incidence will be equal to the angle of refraction

• The angle of incidence will be greater than the angle of reflection

• The angle of incidence and angle of reflection will be equal

• the angle of reflection and angle of refraction will be equal

Which of the following best describes the angle of incidence?

• The angle between the refracted ray and the normal line

• The angle between the reflected ray and the surface

• The angle between the surface and the normal line

• The angle between the incident ray and the normal line

The dashed line on a ray diagram is the ​ ​ (a)   .

• normal line
• dotted line
• solid line
• curved line

What is the principle behind the law of refraction?

• The angle of refraction is always greater than the angle of incidence

• The speed of light changes when it passes from one medium to another

• The angle of incidence is always equal to the angle of reflection

• The angle of incidence and angle of refraction are always equal

Which of the following correctly defines the normal line in optics?

• A line that represents the path of the incident ray

• A line that is perpendicular to the surface at the point of incidence

• A line that is parallel to the surface of the medium

• A line that indicates the direction of the reflected ray

What happens to light when it passes from a denser medium to a less dense medium?

• It continues in a straight line

• It bends away from the normal

• It is completely reflected

• It bends towards the normal

Light travels through these mediums at different speeds, re-order them with the medium which light travels through the fastest to slowest.

• water

• air

• glass

What occurs to light when it transitions from a less dense medium to a denser medium?

• It bends away from the normal

• It is completely absorbed

• It bends towards the normal

• It continues in a straight line

Put the colours of the light spectrum in order, starting with the colour with the largest wavelength:

blue, green, indigo, orange, red, violet, yellow

What made up name can we use to help remember the colours of the light spectrum?

• Ray G Biv

• Roy J Biv

• Roy G Vib

• Roy G Biv