L1 What Are Waves? PDF

L1 What are waves? 5/5 Do Now Where might you find waves?  Activity: In your rows, who can create the best Mexican Wave 5/10 Class discussion 1. Identify the direction of energy transfer of the wave* 2. Describe the motion of an individual person**  Activity: In yo...

L1 What are waves? 5/5 Do Now Where might you find waves?  Activity: In your rows, who can create the best Mexican Wave 5/10 Class discussion 1. Identify the direction of energy transfer of the wave* 2. Describe the motion of an individual person**  Activity: In your rows, who can create the best Mexican Wave 5/10 Class discussion 1. Identify the direction of energy transfer of the wave Along the length of the row, wave moves along row 2. Describe the motion of an individual person They vibrate on the spot, they do not travel across the room  Copy and complete 5/15 1. A wave is a ?????? that moves through space 2. Waves transfer ????? or and ????? without transferring ??????? 3. DTC1: Propose evidence that it is the wave and not the air that travels with a sound wave. 4. DTC2: Identify what type of wave a water wave is  Copy and complete 5/15 1. A wave is a vibration that moves through space 2. Waves transfer energy or and information without transferring matter 3. DTC1: Propose evidence that it is the wave and not the air that travels with a sound wave.  L1: What is a wave? 1. Can you describe what a wave is? 2. Can you describe evidence that waves transfer energy/information without the transfer of matter? 3. Can you define and use the terms frequency, wavelength, amplitude and time period? 4. Can you describe the difference between longitudinal and transverse waves giving examples of each? 5. DTC1: Propose evidence that it is the wave and not the air that travels with a sound wave. 6. DTC2: Identify whether water waves in the ocean are transverse or longitudinal  Slinky demonstration to illustrate key features of a wave 7/22 1. Waves are created by vibrations 2. Rest position = undisturbed original position of wave 3. Amplitude = half the height of the wave 4. Peak = highest point on the wave 5. Trough = lowest point on the wave 6. Wavelength = distance from adjacent peak to peak/trough to trough 7. Time period can be defined as either time taken to create one wave/time taken for 1 wave to pass a fixed point 8. Frequency = number of waves created per second/number of waves passing a fixed point per second 5/27 Propose an equation to link time period and frequency DTC1: Propose an experiment to illustrate that with a sound or water wave matter is not transferred from one place to another  Peer/self assess sheet 3/30 Frequency = 1/time period  What do transverse waves look like?waves, by moving one end of the A Slinky can be used to model transverse Slinky up and down. coils vibrate source moves up and down up and down direction of wave The wave travels away from the source. The direction of the wave is at right angles to the movement of the source. In a transverse wave, the coils do not travel horizontally, each coil of the Slinky just vibrates up and down. A Slinky can be used to model longitudinal waves, by moving one end of the Slinky left and right. source moves coils vibrate left and right left and right direction of wave The wave travels away from the source. The direction of the wave is parallel to the movement of the source. In a longitudinal wave, the coils do not travel horizontally, each coil of the Slinky just vibrates left and right.  Role play 5/40 In groups model A longitudinal wave A transverse wave  Describe the difference between longitudinal and transverse waves 5/50 1. In a transverse wave the vibration is ???? to the direction of energy transfer. 2. In a longitudinal wave the vibration is ???? to the direction of ????? transfer.  DTC1 Water waves: place object in water it with either bob up and down or move backwards and forwards Sound waves: if air particles away moved from the source of a wave e.g. speaker/drum a vacuum would be created. Or place a smoking candle in front of a speaker and the smoke is not projected across the  DTC2 Water waves are both transverse and longitudinal. a. Out at sea they are transverse. b. Once they have broken on the shore they become longitudinal  Plenary Summarise the lesson in 10 words  Homework CGP KS3 higher workbook p35 Scholastic GCSE 9-1 workbook p79-80