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As the balloon rises the volume of the balloon

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As the balloon rises, the volume of the balloon expands because atmospheric pressure is lower at higher altitudes. It is atmospheric pressure that determines the size of the balloon. As altitude increases within the troposphere, temperature drops. Can this explain why the balloon gets larger? Section 3: Pressure Calculations 1. List 5 pressure units. inches Hg, mm Hg, psi, kPa, atm 2. Define pressure with a formula. ±² ³´µ¶· ¸µ·¸ 3. A person steps on your foot – ouch! Explain which would hurt less… a flat shoe or a high-heeled shoe. A flat shoe would hurt less, because the person’s weight is acting on a larger area, so the pressure drops. To the right is a picture of a mercury barometer. A barometer uses air pressure, pushing on the pool of mercury in the dish, to support a column of mercury in the inverted test tube. Under normal atmospheric pressure, atmospheric pressure is strong enough to support a column of mercury 760 mm high, or 29.9 inches high. The weather reports in the US report air pressure in units of inches Hg. 4. If the atmospheric pressure drops, does the height of the column increase or decrease? The height of the mercury drops. 5. Complete Building Skills 2, on p.255. Write the answers below: 1 (a). Yes, each brick exerts the same force. 1 (b). No, the brick lying flat exerts a lower pressure. 2. ±² ¹º²» ¼½¼¼¾¹¹¾²¿ À ± ÁÂÃIJ ¸
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3 (a). You would use an axe! 3 (b). The axe has a narrower edge, so the pressure it applies to the wood is larger than the hammer. Smaller area = higher pressure. Section 4: Molecules in Motion Summarize the 4 postulates of the Kinetic Molecular Theory of Gases. 1. Gases particles are very small, negligible in size in comparison to the great distances separating them. 2. Gas particles are in constant, random motion. Gas pressure is a result of the force and frequency of collisions against the wall of the container. 3. Collisions may transfer kinetic energy, but the energy within the system is always conserved. 4. The Kelvin temperature of a sample indicates the average KE of the sample. The molecules within a sample have a range of energies.
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As the balloon rises the volume of the balloon expands...

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