1) The term propagation of waves refers to.. a) The bending of waves when they pass through different media b) The bouncing back of waves from a surface c) The spreading or transmission of waves from one place to another d) The breaking down of waves into components 2) When a wave strikes a barrier and bounces back, the process is called.. a) Reflection b) Diffraction c) Refraction d) Propagation 3) Which diagram correctly shows the reflection of a wave at a barrier? a) Straight line bending away after entering new medium b) Straight line bouncing back at equal angle c) Wave spreading after passing narrow gap d) Wave pattern traveling in one direction without change 4) The bending of a wave as it passes from water into air is an example of.. a) Diffraction b) Propagation c) Refraction d) Reflection 5) Which of the following affects the speed of wave propagation? a) The wavefront’s curvature b) The wave’s color c) The observer’s position d) The medium’s properties 6) When light waves enter glass from air, they.. a) Travel faster b) Change direction  c) Do not change speed d) Are absorbed 7) Diffraction is most noticeable when.. a) The gap is very wide compared to wavelength b) The gap is perfectly smooth c) The wave travels in a straight line d) The wavelength is much larger than the gap 8) When sound waves spread around a building corner, this is an example of.. a) Refraction b) Diffraction c) Propagation d) Reflection 9) Which factor does NOT change during wave reflection? a) Wave direction b) Wavefront orientation c) Wave angle d) Wave speed 10) If the wavelength increases but the gap stays narrow, diffraction will: a) Remain unchanged b) Decrease c) Stop completely d) Increase

Explain what propagation, reflection, refraction and diffraction of waves are

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