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Barometer Lab

Barometer Lab. Zimmy Berenjena, Renbots Wartinez , Wartin Santa. Problem. What properties of the barometer helps to compare and detect the air pressure (changes in the environment?. Background "Air Pressure” handout. Variables.

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Barometer Lab

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  1. Barometer Lab Zimmy Berenjena, RenbotsWartinez, Wartin Santa

  2. Problem • What properties of the barometer helps to compare and detect the air pressure (changes in the environment?

  3. Background "Air Pressure” handout

  4. Variables • The time is the independent variable and the pressure is the dependent variable. In other words, the air pressure changes depending on the temperature and density of the air. One controlled variable is volume of the barometer.

  5. Hypothesis • If there is more temperature then the pressure increases because the particles of air interact more with each other producing more speed and acceleration.

  6. Data Collection

  7. Data Analysis

  8. 2.From the graph, what can you conclude about changes in the air pressure? • Is kind of stable, the changes are consistent as the weekend goes, but during the day changes aren't consistent. Also changes depends on the altitude and if you are in mountains like Quito or flat places like Buenos Aires; that depends a lot.

  9. 3. How many data points were you able to collect? Do you think this is enough data to make conclusions about air pressure and weather changes? • 14 data points. It is not enough data to make conclusions about air pressure and weather changes because changes are not so visible.

  10. 4.Why was it important to record observations about the weather conditions? • For forecast. In order to predict in the future and know if the oxygen involves in density. Also because weather (temperature9 involves a lot in the air pressure.

  11. 5.Was your data reliable? Explain why or why not. • Yes, because there was no external influences.

  12. 6. Was your data accurate? Explain why or why not. • According to the graph it was accurate, but I think it would be more accurate if we used materials with a better performance, It was accurate because it hasn't had external influences.

  13. 7. What change in atmospheric conditions must occur to cause the free end of the straw to rise? What change must occur for it to fall? • Too much hot can cause clay to melt a little bit and fall. The pressure must occur to cause the free end of the straw to rise.

  14. 8. According to your observations, what kind of weather is usually associated with high air pressure? With low air pressure? • With high air pressure hot weather ( more temperature). • With low air pressure cold weather (less temperature).

  15. 9. If your balloon had a tiny hole in it, what would happen to the accuracy of your barometer? • It wouldn't work and had no accuracy.

  16. 10. What effect, if any, would a great temperature change have on the accuracy of your barometer? Explain. • More pressure, will make the balloon expand more and the variable wont be controlled anymore.

  17. Conclusion • In conclusion this project work out a lot for me and was fun. My hypothesis was supported by my results based on the temperature as I said, the pressure increased when there was more temperature. The results for me are adequate because pressure is dependent to the temperature and normally the temperature in the morning is less than in the afternoon, also it is dependent to density, also the density of the air increases as well of the pressure. One source of error could be the data collection that wasn't so well done. Another source of error was that I didn't record all the days and I needed to ask for friends the miss days. The lab could be re-designed in order to reduce this errors; one way is that we could use the time wisely to gain all the data correctly.

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