1 / 12

Pop cans, tents and bridges!

Pop cans, tents and bridges!. Miss Laverty 2012 ***worksheets, experiments and lesson adapted from the Edmonton Public curriculum book***. Happy Monday!. Hand out the workbooks Grab a copy of today's worksheet Sit down and show me that you are ready to “move some pop cans”.

snowy
Télécharger la présentation

Pop cans, tents and bridges!

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. Pop cans, tents and bridges! Miss Laverty 2012 ***worksheets, experiments and lesson adapted from the Edmonton Public curriculum book***

  2. Happy Monday! • Hand out the workbooks • Grab a copy of today's worksheet • Sit down and show me that you are ready to “move some pop cans”

  3. Magic Moving Pop Cans • Challenge: use only a straw and your breath to make the two pop cans move towards each other • Materials: two pop cans and one straw • Work with a partner to try different ways to get the cans to move towards each other. Describe your strategies

  4. Magic Moving Pop Cans • What were your strategies? • What worked best? • Diagram

  5. Magic Moving Pop Cans • Results: • The easiest way to get the cans to move towards each other was to blow through the center of the cans with the drinking straw

  6. Magic Moving Pop Cans • Inferences: • When we blow through the center of the two cans, the air is moving quickly • Bernoulli’s principle states that the faster air moves, the less pressure it exerts on surfaces over which it is passing • By reducing the air pressure between the cans, the air pressure on the other side of the cans is now greater than the air in between them • This causes the cans to be pushed together by the regular air pressure of the room

  7. Magic Moving Pop Cans • Real life examples: • Wind chimes

  8. London Bridge is falling down • Question: how does the speed of air affect the pressure it exerts? • Materials: paper • Procedure • Fold a sheet of paper in half to create a tent shape • Predict what will happen when you blow through the tent. • Stand the tent up on the table and hold the corners between your thumbs and forefingers • Blow through the tent • Record observations

  9. Paper Tents and Tunnels • Record a before diagram and a during diagram • Try the tent shape and the tunnel shape

  10. Paper Tents and Tunnels • Inferences • Blowing through the tent produces faster moving air • Faster moving air creates a low pressure area inside the tent • The higher pressure of the air on the outside of the tent causes the sides to bend in

  11. Paper Tents and Tunnels Real life example: • “Galloping Gertie”: a suspension bridge from the 1940s couldn’t handle air blowing under and over the bridge • http://www.youtube.com/watch?v=j-zczJXSxnw

  12. Group Work • Stay on task • Respect the learning of everyone • Follow instructions

More Related