#3 - helped the sound of the tuning fork become louder....

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Jacob Murphy Reed Iacarella Katie Shandri Sect: A2 Due: 3/13/08 The Balloon Lens Purpose: To see what is louder, the tuning fork just next to your ear, or with an object (balloon) between the tuning fork and your ear. Procedure: 1. Blow up a balloon and tie it so no gas can escape. 2. Place the balloon up to your ear. 3. Strike the tuning fork softly with a rubber mallet so that it is a weak sound. 4. Place it close to the balloon, which is up against your ear. 5. Now take the balloon away. Observations/Data: The tuning fork was much louder with the balloon next to our ears. Without the balloon next to our ears the sound was much quieter. The balloon creates more surface area for the sound to travel on. Questions: Was the sound louder with the balloon against your ear or without it? The sound was louder with the balloon next to our ears. Can you explain what you heard? The sound was much softer with just the tuning fork next to our ears. The balloon
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Unformatted text preview: helped the sound of the tuning fork become louder. Does sound travel through carbon dioxide faster or slower than air? Yes, sound travels faster through carbon dioxide than air. Does it help to know that carbon dioxide molecules are 1.5 times as massive as air molecules? Yes, because a denser gas will make the sound travel faster. Could the balloon act like a lens focusing the sound toward your ear? Yes, because the balloon creates more surface area for the sound to travel on. Generalizations: A balloon next to your ear can make a tuning fork sound louder. Without the balloon next to your ear the tuning fork will not be as loud. The surface area is much larger when the balloon is there and makes the sound louder. Also sound travels through a solid faster than through a gas. To improve this experiment you could fill up the balloons with different gases and describe how loud the tuning fork is....
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