What did you observe when you tapped a. an empty bottle? _______________________________________________________ b. a bottle with 1/4 amount of tap water?_______________________________________ c. a bottle with 1/2 amount of tap water?_______________________________________ d. a bottle with 3/4 amount of tap water?____________________________________
Answers & Comments
Answer:
You discovered that tapping an empty bottle produced a higher-pitched sound than tapping a bottle full of water did. ... Adding water to the bottle decreases the amount of air space, which means there is less air to vibrate. With less air, the vibrations happen more quickly and produce a higher pitch.
Explanation: When the cap is on the bottle, the air pressure in the bottle is equal to the air pressure outside the bottle. Since the pressure is the same nothing comes out of the uncovered hole at first. When the cap is taken off, the water squirts out of the bottle.
Explanation:
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