Pop cans, tents and bridges! Miss Laverty 2012 ***worksheets, experiments and lesson adapted from...
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Transcript of Pop cans, tents and bridges! Miss Laverty 2012 ***worksheets, experiments and lesson adapted from...
![Page 1: Pop cans, tents and bridges! Miss Laverty 2012 ***worksheets, experiments and lesson adapted from the Edmonton Public curriculum book***](https://reader035.fdocuments.us/reader035/viewer/2022080917/56649efe5503460f94c1274a/html5/thumbnails/1.jpg)
Pop cans, tents and bridges!
Miss Laverty 2012***worksheets, experiments and lesson
adapted from the Edmonton Public curriculum book***
![Page 2: Pop cans, tents and bridges! Miss Laverty 2012 ***worksheets, experiments and lesson adapted from the Edmonton Public curriculum book***](https://reader035.fdocuments.us/reader035/viewer/2022080917/56649efe5503460f94c1274a/html5/thumbnails/2.jpg)
Happy Monday!
1. Hand out the workbooks2. Grab a copy of today's worksheet 3. Sit down and show me that you are ready to
“move some pop cans”
![Page 3: Pop cans, tents and bridges! Miss Laverty 2012 ***worksheets, experiments and lesson adapted from the Edmonton Public curriculum book***](https://reader035.fdocuments.us/reader035/viewer/2022080917/56649efe5503460f94c1274a/html5/thumbnails/3.jpg)
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
![Page 4: Pop cans, tents and bridges! Miss Laverty 2012 ***worksheets, experiments and lesson adapted from the Edmonton Public curriculum book***](https://reader035.fdocuments.us/reader035/viewer/2022080917/56649efe5503460f94c1274a/html5/thumbnails/4.jpg)
• What were your strategies?• What worked best?• Diagram
Magic Moving Pop Cans
![Page 5: Pop cans, tents and bridges! Miss Laverty 2012 ***worksheets, experiments and lesson adapted from the Edmonton Public curriculum book***](https://reader035.fdocuments.us/reader035/viewer/2022080917/56649efe5503460f94c1274a/html5/thumbnails/5.jpg)
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
![Page 6: Pop cans, tents and bridges! Miss Laverty 2012 ***worksheets, experiments and lesson adapted from the Edmonton Public curriculum book***](https://reader035.fdocuments.us/reader035/viewer/2022080917/56649efe5503460f94c1274a/html5/thumbnails/6.jpg)
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
![Page 7: Pop cans, tents and bridges! Miss Laverty 2012 ***worksheets, experiments and lesson adapted from the Edmonton Public curriculum book***](https://reader035.fdocuments.us/reader035/viewer/2022080917/56649efe5503460f94c1274a/html5/thumbnails/7.jpg)
Magic Moving Pop Cans
• Real life examples:– Wind chimes
![Page 8: Pop cans, tents and bridges! Miss Laverty 2012 ***worksheets, experiments and lesson adapted from the Edmonton Public curriculum book***](https://reader035.fdocuments.us/reader035/viewer/2022080917/56649efe5503460f94c1274a/html5/thumbnails/8.jpg)
London Bridge is falling down
• Question: how does the speed of air affect the pressure it exerts?
• Materials: paper • Procedure
1. Fold a sheet of paper in half to create a tent shape2. Predict what will happen when you blow through the tent. 3. Stand the tent up on the table and hold the corners
between your thumbs and forefingers 4. Blow through the tent 5. Record observations
![Page 9: Pop cans, tents and bridges! Miss Laverty 2012 ***worksheets, experiments and lesson adapted from the Edmonton Public curriculum book***](https://reader035.fdocuments.us/reader035/viewer/2022080917/56649efe5503460f94c1274a/html5/thumbnails/9.jpg)
Paper Tents and Tunnels
• Record a before diagram and a during diagram • Try the tent shape and the tunnel shape
![Page 10: Pop cans, tents and bridges! Miss Laverty 2012 ***worksheets, experiments and lesson adapted from the Edmonton Public curriculum book***](https://reader035.fdocuments.us/reader035/viewer/2022080917/56649efe5503460f94c1274a/html5/thumbnails/10.jpg)
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
![Page 11: Pop cans, tents and bridges! Miss Laverty 2012 ***worksheets, experiments and lesson adapted from the Edmonton Public curriculum book***](https://reader035.fdocuments.us/reader035/viewer/2022080917/56649efe5503460f94c1274a/html5/thumbnails/11.jpg)
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
![Page 12: Pop cans, tents and bridges! Miss Laverty 2012 ***worksheets, experiments and lesson adapted from the Edmonton Public curriculum book***](https://reader035.fdocuments.us/reader035/viewer/2022080917/56649efe5503460f94c1274a/html5/thumbnails/12.jpg)
Group Work
• Stay on task • Respect the learning of everyone• Follow instructions