Polarizer+lab+questions

1. Interpret your data and decide what sources produce polarized or partial polorized light. 2. Why can the clear plactic protractors be seen even though all other light is blocked? 3. In general, what type of situations produce polarized light? 4. When you look at the sky close to and far away from the sun, what do you see? 5. What about light coming off of clouds? 6. Why are polarized glasses better than tinted lens, especially when driving?