1. ☁: ________________________
2. ☁: ________________________
3. ☁: ________________________
4. Define reflection.
5. Define refraction.
6. Define total internal reflection.
7. Use the data seen in the Desmos image below to answer the following questions
   
   1. ______________ Calculate the experimental index of refraction for water.
   2. ______________ __________ Use the calculated index of refraction for water to predict the object depth for a penny that appears to be 80 cm underwater.
   3. ______________ __________ Use the calculated index of refraction for water to predict the image depth for a coral head that is actually 140 cm underwater.
   4. ______________ Water has a published index of refraction of 1.33. What is the raw error for the index of refraction data?
   5. ______________ Water has a published index of refraction of 1.33. What is the percentage error for the index of refraction data?

error = experimental value − expected or published value || $\text{percent error}=\frac{(\text{experimental value}-\text{expected value})}{\left(\text{expected value}\right)}$ || $\text{slope}=\frac{(y_2-y_1)}{(x_2-x_1)}$