David+C

**Research Project Proposal** **Question:** how does a laser beam of light refract through glasses of different types of water? I plan to research, in-depth, the science behind light wave lengths and diffraction and refraction of light. My question I wish to answer is; how does a laser beam of light refract through glasses of different types of water? Aim: I wish to have three different glasses of water; one tap water, two (table spoon) sugar water, three (table spoon) salt water. All glasses same shape, water mass 250ml. I first thought of this project idea after researching my love of light. I had talk with Ms Greatbanks and she has suggested to research diffraction of light. After I roughly understood diffraction I look of science buddies and found a project on science buddies similar to what I am now planning to conduct. If I do conduct my planned experiment with lasers the variables are: __ Independent variable: __ the laser, (green light and red light) __ Controlled variable: __ the three different types of water __ Dependent variable: __ the angle and the distance in refraction of the light beam

When conducting this experiment safety measures I must take would be to shell my eyes. I estimated that this experiment will take about an hour to conduct.