Investigating light refraction and reflection
1. Place glass block on paper and draw around it
2. Use protractor to draw a normal line to the block
3. Aim a ray of light at an angle to the normal where it meets the block
4. Mark the path of the rays using crosses
5. Include both the refracted and reflected rays. Then turn off ray box
6. Remove the block and use the crosses as a guide to mark the path of the rays
7. Use a protractor to measure and record the angle of incidence, angle of reflection, and angle of refraction
8. Repeat with a block made from a different material keeping the angle in incidence the same
