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Chapter 29 Notes

QuestionAnswer
Usually waves are party reflected and partly refracted when they fall on a..... transparent medium.
The bouncing back of a particle or wave that strikes a boundary between two media. Reflection.
Metal surfaces are ... to light waves. Rigid.
When light shines perpendicularly on the surface of still waterm, about how much of its energy is reflected? 2%.
When light strikes glass perpendicularly, about how much of its energy is reflected? 4%.
What is the law of reflection? Angle of Incidence = Angle of Reflection.
A light wave that strikes a boundary is called an ... incident wave.
A light wave that bounces off a boundary is called a ... reflected wave.
A line drawn perpendicular to the point where the incident ray strikes the boundary is called a ... normal.
How is a normal drawn? With a dashed line.
Plane mirrors produce only what kind of images? Virual images.
What kind of image appears to be in a location where light does not really reach? Virtual images.
True or False: A virtual image is the same distance behind the mirror as the object is in front of it. True.
The virtual image formed by a ... mirror is smaller an closer to the mirror than the object is. Convex.
When an object is close to a ... mirror, the virtual image is larger and farther away than the object is. Concave.
What kind of mirrors are flat? Plane.
What kind of mirrors are curved outward? Convex.
What kind of mirrors are curved inward? Concave.
What is a likeness or a reproduction of an object? Image.
What kind of images are always upright? Virtual.
What kind of images are always inverted? Real.
What type of image is a concave mirror close up? Virtual.
What type of image is a concave mirror far away? Real.
What is the size of an image in a plane mirror? Same size.
What is the size of an image in a convex mirror? Smaller.
What is the size of an image in a concave mirror close up? Larger.
What is the size of an image in a concave mirror far away? Smaller.
What is the distance of a plane mirror? Same distance.
What is the distance of a convex mirror. Farther.
What is the distance of a concave mirror close up? Closer.
What is the distance of a concave mirror far away? Farther.
What is the reflection of light from a rough surface? Diffuse reflection.
What is an echo? Reflected sound.
What is the bending of a wave as it crosses the boundary between two media at an angle? Refraction.
What occurs in uneven winds or when sound is traveling through air of uneven temperatures? Sound refraction.
What is a distorted image caused by refraction of light in Earth's atmosphere? Mirage.
What is the separation of light into a range of colors? Dispersion.
What is total internal reflection? Total - 100%.
Created by: RMcNamara00
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