Group+2

Members: Chee Yu Anthon Junyuan Cheng Yih

Answer for discussion questions: __Lesson 1__ 1. State what is being transferred by the waves.
 * //Ans: Energy//**

2. State whether the following wave is transverse or longitudinal //**A: Transverse**// //**B: Longitudinal**// //**C: Longtiudinal**//

3. Give examples of each type of waves. Transverse wave : //**Light**// Longitudinal wave : //**Sound**//

4. Explain the difference between transverse and longitudinal waves. //**Ans: The movement of Transverse wave is Perpendicular while the movement of longitudinal wave is Parallel**//

__Lesson 2__ 1.Fill in the blanks //**(i) Peak**// //**(ii) Trough**// //**(iii) Amplitude**// //**(iv) Wave Length**//

2. Refer to the displacement-distance graph below and answer the following questions. (i) What type of wave is this? (ii) Which points are the crests and which points are the trough? (iii) Which point is point C in phase with? (iv) What is the amplitude of the wave? (v) What is the wavelength of the wave?

//**(i) Transverse**// //**(ii) The Crest are Point A and D. The Trough are Point B and F.**// //**(iii) Point E**// //**(iv) 1cm**// //**(v) 2cm**//

THE PLAN TO KILL ALIEN TOP SECRET ! We are planning to use light and sound wave to destroy the alien, as the alien has shown responds to the sound and light . Both of the waves have high frequency and a mplitude which contain high amount of energy  that the alien cannot stand it and it is able to damage and kill the alien when the light and sound is exposed too long to the alien but the alien have a speed of 500m/s, so we must trap the alien. In the middle of hollow bar and surround with light, we think that this plan will kill the alien