I need help and the answers and the chart drawn.

1. The bending of a wave when it goes from one medium to another is called It happens because of wave changes when it goes from one medium to another. 2. Sketch a sound wave refracting from air into a thick glass sheet. Show the angle of incidence and angle of refraction from a line normal to the glass surface. 3. Since the density of glass is more than that of air, the sound wave refracting at the boundary of glass sheet will travel in glass with (equal, more, less) a. speed than that of sound wave speed in air. b. Wavelength than that of sound wave in air. C. Frequency to that of sound wave in air. d. And is bent (towards/away) the normal line. 4. Sound waves travel faster in than than because vibrations can be transferred quickly if the particles of the medium are closer to each other (air, steel, water, vacuum) 5. Sound waves can't travel in a because sound is a mechanical wave and needs a medium to travel through. 6. Higher density slows down the wave because of