By Nicky Godoff 6 th Grade 2 nd Quarter Robert Louis Stevonson Middle School

Controlled variables- the same place; my backyard. Experimental variables-Using a crystal radio and a regular radio.

Radio Frequency Identification- finding how many radio waves are being detected in the area. Crystal Radio- A radio that usually uses a crystal rod antenna.

Question and Hypothesis Question- Can a crystal radio pickup more radio stations than a regular radio? Hypothesis- If a crystal radio picks up more radio stations, then this proves that a crystal radio can pick up more radio stations. I think that the crystal radio can pick up more radio stations because the antenna is longer than the regular radio antenna.

 7dk of 40cm of spooled wire.  2 ½ cm 34 Diode.  1 47k watt resistor.  1 hi impedance ceramic speaker  1 wood board.  1 regular radio.

Procedure A.G et materials. B.B uild crystal radio. C.S et up the observation table. D.G et both radios set up outside. Test hypothesis on two different days. E.D raw conclusion.

DatesCrystal RadioRegular Radio 11/25Has less radio stations. Has twice as much radio stations. 11/27It picked up more stations. It still had more radio stations.

Crystal Radio VS. Regular Radio The graph shows how much radio stations are being detected.

In my experiment the crystal radio did not pick up as much radio stations as the regular radio. The crystal radio picked up less radio stations, the radio had at least twice as much more radio stations. The results weren’t much different on the trails.

My hypothesis was incorrect, the crystal radio only picked up radio stations. The regular radio picked up radio stations. If I would do the project again I would have built the crystal radio better and have a longer antenna. I recommend this project to people that have a lot of time, because the crystal radio is hard to build.

Matolak, David W. “Radio Frequency Identification.”World Book, Web. 2 Nov Halper, Donna L., & David W. Matolak. “Radio.” World Book, web. 2 Nov Special thanks to my dad for getting the materials and helping me with the project Also to Mr. Pham!!!!