click below
click below
Normal Size Small Size show me how
Light
KS3 Q&A Reflection and Refraction
Question | Answer |
---|---|
Define refraction? | The name given to the ability of light to change its speed and direction when travelling into a more or less dense substance. |
what is the scientific term used to describe an object which gives off its own light? | Luminous |
What is the name of the ray which travels towards a surface from a light source? | Incident ray |
What is the name of the angle that the reflected ray makes with the normal? | Angle of reflection |
What happens to the light when it enters a less dense medium (e.g. air)? | The ray of light moves away from the normal |
What happens if the incident ray hits a surface at 0 degrees? | No refraction occurs |
In Refraction what is the relationship between i and r? | i does not equal r |
in reflection what is the relationship between i and r? | i = r |
What do we mean by the term normal? | this refers to a line drawn at right angles to the mirror where an incident ray hits the mirror or medium |