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Behavior sound/light
TEKS 7A,7C,7D, 7E
Term | Definition |
---|---|
Reflection | Bouncing back of a wave |
Refraction | Bending of a wave |
Diffraction | Spreading of waves around obstacles |
Interference | the net effect of two or more waves that intersect |
Resonance | when one object vibrating at the same natural frequency of a second object forces that second object into vibrational motion |
Doppler Effect | an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move toward (or away from) each other |
Plane Mirror | a flat reflective surface |
Convex Lens | refracted rays converge at one point |
Real Image | reproduction of an object via light that can be formed on a surface |
Virtual Image | outgoing rays from a point on an object always diverge |
Angle of Incidence | the angle made by a ray of light with a perpendicular to the reflecting surface |
Angle of Reflection | the angle made by a reflected ray with a perpendicular to the reflecting surface |
Angle of Refraction | the angle between a bent ray and a line drawn normal to the interface between two media |
Index of Refraction | the ratio of the speed of the light in vacuum to the speed of the light in the medium |
Red Shift | describe how light shifts toward longer wavelengths as objects in space move away from an observer (Doppler Effect) |
Blue Shift | describe how light shifts toward shorter wavelengths as objects in space move toward an observer (Doppler Effect) |
Incident Ray | ray of light that strikes a surface |
Reflected Ray | a ray of light which is thrown back from a surface |