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# Kohl Questions

When waves strike the surface of a transparent medium, like water at an angle the direction changes. This is refraction.
When light shines perpendicularly on the surface of still water how much of its energy is reflecteed? 2% is reflecteds and the rest is transmitted.
When light strikes glass perpendicularly how much of its energy is reflected? 4% is reflected and the rest is transmitted
What does the Law of Reflection state? It says that the angle of incience and the afngle of reflection are equal to each other.
What is a light wave that strikes a boundary called? It is called and incident wave.
How is incident wave's path drawn? The path is drawn as a staight line arrow.
What is the straight line with an arrow called? It is called an incident ray.
What is a light wave that bounces off a boundary called? It is called a reflected wave.
How is the reflected wave drawn? It is drwan as a reflected ray.
A line drawn perpendicular to the point where the incident ray strikes the barrier is called the what? It is called the normal.
How is the normal drawn? It is dran as a dashed line.
Will the angle of incidence always equal the angle of reflection? Yes, it will.
Where does a virtual image appear? It appears to be in a location where ligt does not really reach.
What kind of images does a plane mirrow show? It only show virtual images.
What kind of mirror curves outward? A convex mirror.
What kind of mirror curves inward? A concave mirror.
Are virtual images usually upright or inverted? Virtual images are usually upright.
Are real images usually inverted? Yes, they are.
What is diffused reflection? It is the reflection of light from a rough surface.
What is an echo? A reflected sound.
Created by: 13_kholmes

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