Light and Sound Checklist PDF

**[Light and Sound Checklist]** Use this checklist to help prepare you for the 'Light and Sound' Assessments. You should fill in the final column with either a score out of 10 or by colouring it in red, yellow or green. **Light and Sound**...

**[Light and Sound Checklist]** Use this checklist to help prepare you for the 'Light and Sound' Assessments. You should fill in the final column with either a score out of 10 or by colouring it in red, yellow or green. **Light and Sound** ------------------------------------------------------------------------------------------------------------------------------------------------------ ---------------- **I can...** **Confidence** Identify sources of sounds by knowing that they are caused by vibrations Relate high pitched sounds to high frequency vibrations Relate loud sounds to high amplitude vibrations Compare wave pictures of sound from an oscilloscope so that loud/quiet, high/low sounds can be identified Recall that sound needs a medium to travel through Explain the terms 'medium' and 'vacuum' within the context of sound Link the speed of sound through various materials (e.g. solids, liquids or gases) to their density (higher density means greater speed of sound) Describe how the human ear works with reference to the outer, middle and inner ear Recall that humans have an approximate hearing range of 20 -- 20 000Hz Analyse data to compare the hearing ranges of different animals Recall that sound loudness is measured in decibels Appreciate that exposure to loud sounds can lead to hearing damage (the louder the sound and longer the exposure, the more damage done) Compare the speed of light and sound Calculate the speed of sound from practical data Draw ray diagrams that show an understanding that light travels in straight lines Describe the meanings of the terms transparent, translucent and opaque and describe how light interacts with these materials. State the meaning of the normal line in the context of ray diagrams Describe the law of reflection and apply it to ray diagrams involving the reflection of light Describe the nature of the image formed by a plane mirror Explain the difference between light reflected from a rough surface (diffuse reflection) and a shiny surface Understand that light can change direction at a boundary between two different media (materials) Show understanding that light travelling along the normal line won't be refracted (won't change direction) Use understanding of refraction to draw rays passing through transparent blocks Use understanding of refraction to explain everyday situations involving refraction (such as the appearance of objects under water) Describe what is meant by the term dispersion and how it is achieved using a triangular prism Recall the order of the colour spectrum when light is dispersed Identify green, red and blue as the primary colours of light Describe how the secondary colours of yellow, cyan and magenta are produced Recall that white light is formed from the combination of all three primary colours Explain which colours are absorbed and which are reflected by different coloured objects Describe the action of coloured filters on white light and different coloured light in terms of which colours are absorbed and which are transmitted