1 / 9

Vacuum

Explore the concepts of gas diffusion and effusion, where molecules move from high to low concentration. Examples and applications in weather, air pressure, and particle movement. Learn about Graham's Law and gas behavior in different conditions.

ebuster
Download Presentation

Vacuum

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. Pinhole Gas Vacuum

  2. Pinhole Gas Vacuum

  3. Diffusion vs. Effusion Diffusion - The tendency of the molecules of a given substance to move from regions of higher concentration to regions of lower concentration Examples: A scent spreading throughout a room or people entering a theme park Effusion - The process by which gas particles under pressure pass through a tiny hole Examples: Air slowly leaking out of a tire or helium leaking out of a balloon

  4. Effusion Particles in regions of high concentration spread out into regions of low concentration, filling the space available to them.

  5. Weather & Air Pressure HIGH pressure = good weather LOW pressure = bad weather

  6. Weather and Diffusion LOW Air Pressure HIGH Air Pressure Map showing tornado risk in the U.S. Highest High

  7. Hurricane Bonnie, Atlantic Ocean STS-47

  8. Hurricane WilmaOctober 19, 2005 88.2 kPa in eye

  9. NET MOVEMENT To use Graham’s Law, both gases must be at same temperature. diffusion: particle movement from high to low concentration effusion: diffusion of gas particles through an opening For gases, rates of diffusion & effusion obey Graham’s law: more massive = slow; less massive = fast

More Related