Drop a Coin

Noah Schutte

Purpose Statement

The purpose of this experiment is to see if people can use their sense of hearing to tell apart a penny, nickel, dime, and quarter. I am interested in this experiment because I want to see if I can tell which coin was dropped onto a surface. The information gained from this experiment will help me hear things more closely and make me think when I hear those things.

Hypothesis

My hypothesis is that the people will know if the quarter is dropped more than the other coins because it is the biggest coin of them all.

Variables

Independent Variable: type of coin.

Dependent Variable: if the people can tell what coin that was dropped

CV: type of coin, drop height

Research

Background Research: A penny weighs 2.5 grams. A dime weighs 2.27 grams. A nickel weighs 5 grams. A quarter weighs 5.67 grams. Quarters are made out of an alloy (a mixture of metals) of 91.67 percent copper and 8.33 percent nickel. From 1837 to 1857, the penny was made of bronze(95 percent copper, and five percent tin and zinc). From 1857, the penny was 88 percent copper and 12 percent nickel, giving the coin a whitish appearance. But newer pennies are made mostly of zinc. Nickels are still a 5 gram coin that is an alloy of 75% copper and 25% nickel. From 1942 to 1945 nickels were made with 35% silver, because nickel was badly-needed for wartime industrial use. Dimes are made out of an alloy (a mixture of metals) of 91.67 percent copper and 8.33 percent nickel (before 1965, the dime was made out of silver). The dime has a edge with 118 ridges. This coin is 17.91 mm in diameter and is 1.35 mm thick - it is the smallest, thinnest and lightest US coin.


The first coins were made of electrum, an alloy of silver and gold. It appears that many early Lydian coins were minted by merchants as tokens to be used in trade transactions. The Lydian state also minted coins, most of the coins mentioning king Alyattes of Lydia. The oldest coin available today was discovered in Efesos, an ancient Hellenic city and prosperous trading center on the coast of Asia Minor. The 1/6 stater is more than 2,700 years old, making it one of the very earliest coins. Made from electrum, a natural occuring alloy of gold and silver, the coin originated in the area of Lydia. It had a design on one side only, a result of the primitive method of manufacture. This ancient stater was hand struck. A die with a design (in this case a lion's head) for the obverse (front) of the coin was placed on an anvil. A blank piece of metal was placed on top of the die, and a punch hammered onto the reverse. The result was a coin with an image on one side and a punch mark on the other.

Materials

Countertop

5 people

Penny

Nickel

Dime

Quarter

Procedures

1) Have the participant cover their eyes and close them.

2) Drop a coin.

3) Have participant guess what the coin was.

4) Repeat steps two and three 3 times.

Data

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Results

The original purpose of this experiment was to see if people can use their sense of hearing to tell apart a penny, nickel, dime, and quarter. The results of the experiment were the participants recognized the quarter and the dime the most.
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Conclusion

My hypothesis was that the people will know if the quarter is dropped more than the other coins because it is the biggest coin of them all. The results indicate that my hypothesis should be considered inconclusive because the quarter was recognized the most as well as the dime. Based on the results of this experiment if you ever drop a coin out of your pocket and the coin lands on the ground you should be able to notice if it is a quarter or dime based on this experiment. If I were to conduct this science fair project again I would drop the coins on a different surface.

Acknowledgements

John Schutte

Stacie Schutte

Bryn Schutte

Ty Erwin

Dylan Reimers

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