4.1.4 Waves Spec ref. Summary of the Learning outcomes Suggested Opportunities to develop Opportunities to apply Self/peer assessment specification content timing scientific communication skills practical and enquiry Opportunities and What most candidates should (hours) skills resources be able to do Reference to past questions that indicate success 4.1.4.1 In a transverse wave Describe the difference 1 Draw diagrams to show the What do waves look the oscillations are between transverse and features of transverse and like? perpendicular to the longitudinal waves. longitudinal waves. Do all waves have the direction of energy Describe how ripples on Give examples of both same properties? transfer. The ripples water surfaces are examples transverse and longitudinal Demonstrate how on a water surface are of transverse waves whilst waves. transverse and an example of a sound waves in air are Describe the propagation of longitudinal waves travel transverse wave. longitudinal waves, and how both transverse and using a slinky spring. In a longitudinal wave the speed of each may be longitudinal waves. Plan an experiment to the oscillations are measured. Explain the changes in air measure the of parallel to the direction Describe evidence that in pressure caused by sound in air. Eg bang of energy transfer. both cases it is the wave and longitudinal waves in regions two pieces of wood Longitudinal waves not the water or air itself that of compression and together facing a large show areas of travels. rarefaction. wall and record the time compression and Describe how the speed of taken to hear the echo. rarefaction. Sound List the waves in the ripples on a water surface Measure the distance to waves travelling electromagnetic spectrum in can be measured. the wall and double it. through air are order of shortest to longest longitudinal. Required practical 5: Describe and explain how wavelength. make observations to the speed of sound waves in identify the suitability of air can be measured apparatus to measure experimentally. the frequency, wavelength and speed of waves in a ripple tank and waves in a solid and take appropriate
4.1.4 Waves Spec ref. Summary of the specification content Learning outcomes What most candidates should be able to do Suggested timing (hours) Opportunities to develop scientific communication skills Opportunities to apply practical and enquiry skills Self/peer assessment Opportunities and resources Reference to past questions that indicate success 4.1.4.1 In a transverse wave the oscillations are perpendicular to the direction of energy transfer. The ripples on a water surface are an example of a transverse wave. In a longitudinal wave the oscillations are parallel to the direction of energy transfer. Longitudinal waves show areas of compression and rarefaction. Sound waves travelling through air are longitudinal. Describe the difference between transverse and longitudinal waves. Describe how ripples on water surfaces are examples of transverse waves whilst sound waves in air are longitudinal waves, and how the speed of each may be measured. Describe evidence that in both cases it is the wave and not the water or air itself that travels. Describe how the speed of ripples on a water surface can be measured. Describe and explain how the speed of sound waves in air can be measured experimentally. 1 Draw diagrams to show the features of transverse and longitudinal waves. Give examples of both transverse and longitudinal waves. Describe the propagation of both transverse and longitudinal waves. Explain the changes in air pressure caused by longitudinal waves in regions of compression and rarefaction. List the waves in the electromagnetic spectrum in order of shortest to longest wavelength. What do waves look like? Do all waves have the same properties? Demonstrate how transverse and longitudinal waves travel using a slinky spring. Plan an experiment to measure the of sound in air. Eg bang two pieces of wood together facing a large wall and record the time taken to hear the echo. Measure the distance to the wall and double it. Required practical 5: make observations to identify the suitability of apparatus to measure the frequency, wavelength and speed of waves in a ripple tank and waves in a solid and take appropriate
AQA-8465-SOW-BBLOCK.DOCX