Lab Report

Title: Comparing one's perception of the area of an object underwater to the area above water.

Problem Statement: How does ones perception of the area of an object underwater compare to one's perception of the area of an object above water?

Method and Materials: Materials:
- underwater cameras (2)
- ply wood (12 feet Long)
- duct tape
- shimmies
- pertinent markers (red and black)
- chalk board (green boarder)
- Tupperware top
- Small Etch-A-Sketch
- Body of water with a flat bottom (must be large enough to fit the ply wood)
- Ruler (must be at least one foot long)
Before doing the lab, one must build the contraption used. First mark every foot on the board with a black permanent marker. Use the red marker to indicate that at 4, 6, 8, and 10 feet will be the distances used in the experiment. Then attach disposable underwater camera to the board with the lens at the one foot mark. Then tape the camera to the board. Be sure that you do not cover the button, lens and forward knob. After one tapes the camera to the board, make sure one can see all the objects through it. Write 4 feet on one shimmy, 6 feet on a shimmy, 8 feet on a shimmy, and 10 feet on a shimmy. Put each object at every distance with the shimmy (make sure it is the correct distance) and take a picture above and under water. Develop pictures and analyze results. See result pictures page.

Hypothesis: The hypothesis from our lab comparing underwater vision with above water vision are shown below. Under each bar graph there is the table with exact sizes of the objects. The sizes are measured in square centimeters and the distances are measured in feet.

Results: See Results page.

Conclusion: One's perception of the area of an object is increased by about thirty-three percent when placed underwater in comparison to one's perception of an object above water.