Show the reflection for a straight wave entering a curved barrier.  Draw your own example on loose leaf.  Make sure the barrier is not a semicircle only a shallow curve.

Reflection – Show the reflection for a straight wave entering a curved barrier.  Draw your own example on loose leaf.  Make sure the barrier is not a semicircle only a shallow curve.

Refraction – Draw your own example on loose leaf using the question below.

 Periodic waves in deep water have a wavelength of 1.9 cm. The waves then hit a boundary at an angle of 35° and the waves then have a wavelength of 1.5 cm in the shallow water. With what angle does the water propagate into the shallow water? Use the circle below to draw the waves in the ripple tank.

Diffraction – Draw your own example on loose leaf.

Draw a real world example of diffraction.  Explain your answer.

Interference – Use Given, required, equation, answer, sentence

In a ripple tank, a point on the second nodal line from the center is 52cm from one source and 45 cm from the other source. The sources are separated by 10.2 cm and vibrate in phase at 11.1 Hz.  Calculate:

1. 1. The wavelength of the waves.
   2. The speed of the waves.