1 / 11

Liquid and Atmospheric Pressure

Liquid and Atmospheric Pressure. Physics February 15/16. Make a prediction. If I put 3 holes in the bottle, one right on top of the other, which will the water flow the fastest?. C. B. A. Answer.

marika
Download Presentation

Liquid and Atmospheric Pressure

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Liquid and Atmospheric Pressure Physics February 15/16

  2. Make a prediction • If I put 3 holes in the bottle, one right on top of the other, which will the water flow the fastest? C B A

  3. Answer • If I put 3 holes in the bottle, one right on top of the other, which will the water flow the fastest? The bottom hole WHY? The pressure of a liquid depends on the depth of the liquid

  4. Pressure and Depth Examples • Figure 19.2 • Figure 19.3 • Figure 19.4 • Hands-up, hands-down

  5. What else affects liquid Pressure? • The density of the material • More dense liquid have more pressure!!! • For example: • Oil vs. Water

  6. Check for Understanding • Both are filled with water, which has more pressure. • One is water and the other is alcohol. Which has more pressure? Why? B A WATER ALCOHOL

  7. What about Atmospheric Pressure? • Same as liquid • Density • Depth • Speed of air/fluid also matters

  8. Speed of air/fluid also matters • When speed increases then pressure drops • Bernoulli’s principle • Teacher Demo/Examples • Soda can • Paper • Straw

  9. Check for understanding When taking a shower, sometimes the curtain blows toward you. Why? • Hot water speeds up molecules in shower. • Pressure decreases inside shower (Bernoulli’s principle) • Pressure from outside shower pushes curtain

  10. Class work • Skim sections 19.1, 20.2, and 20.7 • Answer questions: • Page 286 # 2, 4 • Page 303 #3 and 14

  11. Closing • What factors affect the pressure of a fluid (liquid/gas)? Explain how

More Related