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# Light and reflection: reflecting off surfaces

TLF ID L2043

Observe balls bouncing off surfaces of different roughness. Arrange the surfaces according to how much they scatter the balls. Observe light beams reflecting off surfaces of different roughness. Arrange the surfaces according to how much they scatter the light beams. Choose a reflector to help a castaway flash a beam of sunlight at a passing ship. Notice that surface roughness and flatness both affect reflection properties. This learning object is one in a series of six objects. Some of the objects are also packaged as two combined learning objects.

#### Educational details

Key learning objectives
• Students explore angles of incidence using plane mirrors.
• Students predict the direction that light will be reflected by fixed mirrors.
Educational value
• Illustrates that the reflective properties of a surface are related to its roughness and shape.
• Simulates the amount of scatter occurring when light strikes a surface.
• Demonstrates the angle at which light is reflected by a range of surfaces.
• Randomised generation of surfaces supports repeated use.
Year level

9

Learning area
• science
Strand
• Science/Science understanding
Concept
• Science/Light
• Science/Reflection
Skill
• Knowledge;
• Comprehension;
• Application;
• Analysis
Student activity
• Interactives;
• Experiment;
• Analysis;
• Modelling
Learning design
• Experiential learning;
• Independent learning;
• Problem solving;
• Visual learning

#### Other details

Contributors
• Script writer
• Name: Roger Dickinson
• Organisation: The University of Western Australia; The Centre for Learning Technology
• Address: Nedlands WA 6907 Australia
• URL: http://www.clt.uwa.edu.au/
• Subject matter expert
• Name: Roger Dickinson
• Organisation: The University of Western Australia; The Centre for Learning Technology
• Address: Nedlands WA 6907 Australia
• URL: http://www.clt.uwa.edu.au/
• Technical implementer
• Organisation: The University of Western Australia; The Centre for Learning Technology
• Address: Melbourne WA 6907 Australia
• URL: http://www.clt.uwa.edu.au/
• Publisher
• Date of contribution: 09 Oct 2013
• Organisation: Education Services Australia
• Address: Melbourne VIC 3000 Australia
• URL: http://www.esa.edu.au/
Access profile
• Colour independence
• Device independence
• Hearing independence
Learning resource type
• Interactive Resource
Browsers
• Microsoft Internet Explorer - minimum version: 8.0 (MS-Windows) - maximum version: 9.0 (MS-Windows)
• Firefox - minimum version: (MS-Windows)
• Safari - minimum version: 5.1 (MacOS)
Operating systems
• MacOS - minimum version: 10.6
• MS-Windows - minimum version: XP - maximum version: 7
Rights
• © Education Services Australia Ltd, 2013, except where indicated under Acknowledgements.