1. The tendency of light to bend as it passes through objects with different densities is called ________ . This is what causes object viewed underwater to appear _______

D) Refraction/Larger or closer

As divers, the light reaching our eyes (assuming it is the sun!) passes through the water, then the glass of our mask, and then the air inside our mask. There is quite a lot of bending of light and, subsequently, refraction.