0 6. 5 The frequency of the waves is 1.25 Hz. 0 6. 7 The teacher increased the size of the gap in the barrier. The wavelength of each wave is 0.040 m. Figure 8 shows the waves passing through the larger gap. Figure 8 Calculate the speed of the water waves. Wave Barrier Use the Physics Equations Sheet. [2 marks] Speed = m/s Why is the effect different? [1 mark] Tick (v ) one box. A teacher demonstrated the effect of barriers on water waves by placing a barrier in a tank of water. The wavelength of the wave is much smaller than the gap. 0 6. 6 Figure 7 shows the water waves as they passed through the gap in the barrier. The wavelength of the wave is the same as the gap. Figure 7 The wavelength of the wave is much greater than the gap. Wave Barrier [Total 8 marks] Give the name of the effect shown in Figure 7. [1 mark]0 6 Water waves are transverse waves. 0 6. 1 Complete the sentence. Choose the answer from the box. [1 mark] charge energy mass Waves transfer without transferring matter. Figure 6 shows a piece of wood floating on water. Water waves travel across the surface of the water. Figure 6 Piece of wood 0 6. 2 Which property of the wave does the distance labelled X represent? [1 mark] 0 6. 3 In a time of 12 seconds, 15 complete waves pass the piece of wood. Calculate the time taken for one complete wave to pass the piece of wood. [1 mark] Time taken = 0 6. 4 Give the name for the time taken for one complete wave to pass the piece of wood [1 mark]