Posts Tagged ‘refractive index’


Friday, April 29th, 2011

refraction by the_green_squirrel

All waves refract.  This means that they change speed as they travel from one medium to another.  For example, light waves travel faster in air than they do in water.  This means the pencil in the glass of water looks like the picture on the right.  For a full explanation of refraction, read this.  Hopefully you now understand the concept.  If not, ask this archer fish to explain it to you!

We will do a lab to investigate refraction of light as it passes through glass and perspex, and to determine the refractive indices of these substances.  This handout (thank you Mr Duckworth) explains in more detail. Grade-9-Integrated-Science-Waves-Topic-refraction1

You will be required to submit the data tables, calculations and graphs for this lab only.  Refer to this rubric: FINALRubric DCP

Refraction of light

Monday, April 19th, 2010
refraction by Moh_Tj on flickr

refraction by Moh_Tj on flickr

We’re going to learn about refraction and how it happens.  Thanks to Mr Duckworth for producing these notes to help us. Grade 9 Integrated Science Waves Topic – refraction  

We’ll also be doing a lab to collect some data and find out the refractive index of glass and perspex.  The rubric is here: Pre IB Lab Rubric 08 – 09  You will be assessed on the data collection and processing part only.