QUESTION 3 Switch on your light source. Make sure it is shining on a wall. Hold your largest plastic shopping bag square between the light source and
3a. Now do the same with the second plastic shopping bag square. What do you observe?
3b. Now do the same with the third plastic shopping bag square. What do you observe?
3c. What do you observe?
3d. What difference do you observe between the shadows of the three shapes?
