Wave Interactions and Behaviors Glencoe Chapter 10 Section

Wave Interactions and Behaviors Glencoe: Chapter 10 Section 3 Pages 301 -309

Wave Behaviors A. Reflection (Fig. 10 -13, 10 -14) (p. 301 -302)– bouncing back of a wave as it meets a boundary or surface - Examples: Echoes, Looking in a mirror

Wave Behaviors B. Refraction (Fig 10 -15, 10 -16, 10 -17) (p 302 -303)– bending of waves as they pass from one medium to another

Wave Behaviors C. Diffraction (Fig. 10 -18, 10 -19, 10 -20) (pages 304 -305)– bending of waves around an edge

Wave Interactions D. Interferance – combination of 2 or more waves usually produces one wave (bigger if in phase) (smaller if out of phase)

Wave Interactions Constructive interference – when waves combine to create a bigger wave sum of the amplitudes of the waves Example drawing – figure 10 -21 (p 306) /

Wave Interactions 2. Destructive interference – when waves combine to form a smaller or no wave some may completely cancel out difference between the amplitudes of the waves - Example drawing – figure 10 -22 (page 307) /

Wave Interactions E. Wave speed depends on the medium ex. Sound moves fastest through solids moves moderately fast through liquids moves slowest through air/gases (340 m/s) - due to movement of molecules in the medium

Wave Interactions F. Light travels at a constant speed 3 x 108 m/s = 300, 000 m/s (186, 000 miles/sec. ) - symbolized as “c”