No Brain Too Small PHYSICS AS91170 Version 1 Demonstrate understanding of waves Level 2 Credits 4 This achievement standard involves demonstrating understanding of waves. Achievement Achievement with Merit Achievement with Excellence Demonstrate understanding of waves. Demonstrate in-depth understanding of waves. Demonstrate comprehensive understanding of waves. Written statements include mathematical solutions and/or descriptions. Descriptions may include graphs or diagrams. LIGHT Reflection Reflection in curved mirrors Ray diagrams for plane and curved mirrors Refraction Refraction through lenses Ray diagrams for convex and concave lenses Snell’s law including the graphing of sin I and sin r Total internal reflection Critical angle at a plane boundary WAVES Properties of electromagnetic waves Reflection at a plane boundary Refraction at a plane boundary Phase and wave parameter upon reflection & refraction Superposition of pulses Diffraction 2-point source interference (qualitative) SKILLS The appropriate use of significant figures The appropriate use of units -2 2 Negative index (e.g. ms ) notation or slash notation (e.g. m/s ) No Brain Too Small PHYSICS Notes RELATIONSHIPS: 1 1 1 = + f do di d i hi m= = d o ho or or si so = f 2 f si = m= so f n1 sin θ1 = n 2 sin θ 2 v =fλ 1 f = T n1 v 2 λ 2 = = n2 v 1 λ 1 v= d t Demonstrate understanding involves writing statements that show an awareness of how simple facets of phenomena, concepts or principles relate to a described situation. Demonstrate in-depth understanding involves writing statements that give reasons why phenomena, concepts or principles relate to a described situation. For mathematical solutions, the information may not be directly usable or immediately obvious. Demonstrate comprehensive understanding involves writing statements that demonstrate understanding of connections between concepts. This achievement standard replaces AS90254, unit standard 6382, and unit standard 8768.