Penny Experiment
 D
 Since the sides of a penny are raised up, the penny acts as a tiny pool that can be filled with water. Items within the pool take up space that water can fill. Since both sides of a penny have different pictures, maybe the amount of raised surface is different.
 Extra Credit
 Which Side Of A Penny Will Hold The Most Water, Heads Or Tails?
 1) What is meant by raised surface? 2) Explain what building is on the back of a penny? 3) Older pennies have a wheat (plant) design on them. Will this change your results? 4) Why is there a building on the back of some pennies?
 My Science Notebook has a graph, experiment D sheet, a write up using the scientific method and a daily summary for each day that I worked on that experiment.
 Problem: Which side of a penny will hold the most water, heads or tails? Hypothesis: (my opinion) Heads seems to have less STUFF on it. More water can probably fill that side. Materials : water Equipment: pennies, tray, sponge, dropper, desk, cup Procedure: step 1) Put dropper into a cup of water and squeeze the air out. Water will fill the dropper. step 2) Put a penny on a tray and hold a ruler next to it. step 3) Hold a dropper at the desired height of 1 inch step 4) Squeeze dropper letting drops of water fall on the penny. step 5) Count how many drops fit on the penny before it overflows. (this is my) step 6) Dry penny and repeat steps for the next trial. step 7) Now turn the penny over to the other side and repeat all the steps, drying the penny between trials. Results: (these are sample results) Side guess 1 2 3 A Heads 11 12 15 9 12 Tails 5 2 4 0 2 Conclusion: (why your results are the way they are) Heads seems to be able to hold more water. I feel this is due to the fact that there are less things sticking up on the heads side of the penny. Variables: (things that cause changes) Someone hit my arm, there was splashing, the eyedroppers were different sizes, people were fooling around at my table, sometimes the penny that I needed was not in the box.
 Scientific Method Write-up