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# powerpoint questions

What is the law of reflection? The relationship between the angle of incidence and the angle of reflection, they must equal each other.
Which types of mirrors are flat and produce only virtual images? Plane mirrors.
How can one tell the difference between a virtual and a real image? A virtual image is always upright while a real image is inverted or upside down.
A concave mirror curves in and its image is larger and farther away. How is a convex mirror shaped and what does it's image look like? A convex mirror is curved outward and its image is smaller and closer than the object is in real life.
What kind of mirrors are convex mirror? Security mirrors and traffic mirrors are both convex mirrors.
What is diffuse reflection? Diffuse reflection is the reflection of light from a rough surface.
What happens to sound energy that is not reflected? The sound energy is absorbed or transmitted.
Why are grooves designed into the walls of a concert hall? The grooves in the wall help the sound waves to be diffused.
What happens when walls are to reflective? The sound becomes garbled because of multiple reflections which is called reverberations.
What is very important in the design of an auditorium or concert hall? A balance between reverberation and absorption.
How is light reflected from a smooth mirror? Light reflect from a smooth mirror in only one direction, in an orderly pattern.
What happens when light is incident on a rough surface? The light is reflected in many directions.
What does it mean if light rays diverge? It means that the light rays spread apart.
What is the name of the line perpendicular to where the incident ray strikes? The normal.
Which angle is formed between the incident ray and the normal? The angle of incidence.
Created by: megan hollander

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