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Barometer

Barometer . Measuring Air pressure . What is a barometer?. A barometer is a tool that measures air pressure. Why a barometer is useful? . It is a useful tool for helping predict weather changes. How we create a Barometer?. http:// www.youtube.com/watch?v=ah8F-xmvB2k. Experiment Time .

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Barometer

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  1. Barometer Measuring Air pressure

  2. What is a barometer? • A barometer is a tool that measures air pressure

  3. Why a barometer is useful? • It is a useful tool for helping predict weather changes.

  4. How we create a Barometer? • http://www.youtube.com/watch?v=ah8F-xmvB2k

  5. Experiment Time

  6. Why the needle changed to height? • This is because the air stressed in the jar, when the air pressure outside the jar is higher, the balloon is push in and the needle goes up.

  7. Why the needle changed to lower? • When the air pressure outside the jar is lower, the balloon is push out and the needle goes down.

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