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Flying toilet paper, funnel ball and curve balls

Flying toilet paper, funnel ball and curve balls . Miss Laverty 2012 ***experiments, lesson and worksheet adapted from the Edmonton Public School Division curriculum book***. Tuesday, March 6 th 2012 . Hand out the work books Grab today’s handout

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Flying toilet paper, funnel ball and curve balls

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  1. Flying toilet paper, funnel ball and curve balls Miss Laverty 2012 ***experiments, lesson and worksheet adapted from the Edmonton Public School Division curriculum book***

  2. Tuesday, March 6th 2012 • Hand out the work books • Grab today’s handout • Sit down and show me you are ready to make some toilet paper FLY!

  3. Flying Toilet Paper • Materials: one roll of toilet paper and one blow dryer

  4. Flying Toilet Paper • Procedure: • Have someone hold the toilet paper horizontally with their index fingers • Blow over the top of the roll with the hair dryer set on full speed • Observe and record results • Clean up the mess!

  5. Flying Toilet Paper • Results: • the toilet paper unraveled off of the roll and lifted into the air

  6. Flying Toilet Paper • Variations: Try this experiment with a strip of paper. Hold one end of the paper under you bottom lip and blow over the surface of the paper to make the paper to lift

  7. Flying Toilet PaperDiagram

  8. Flying Toilet Paper • Inferences • Fast moving air exerts less pressure on the surfaces that it passes over • The air moving over the top of the roll has less pressure than the normal air below it • The normal air pressure is considered high compared to the fast moving air above the paper • This causes the normal air pressure under the paper to lift or rise the paper • This demonstration of Bernoulli’s principle

  9. Flying Toilet Paper • Real life examples • Streamers on a fan • Kite flying

  10. Funnel Ball • Challenge: try to blow the ball out of the funnel using only your breath • Materials: funnel and ball (Styrofoam or Ping-Pong)

  11. Funnel Ball • Procedure: • Put the ball in the funnel and hold the funnel upright • Predict what will happen when you blow into the funnel • Blow hard into the funnel • Observe and record results

  12. Funnel Ball • Prediction: I predict that when I blow into the full the ball will _____________________. • Fly out, stay in, hover…

  13. Funnel Ball • Results: When I blew into the funnel the ball ____________________________________. • Variations: Try this experiment upside-down. Does the ball stay in the funnel when you are blowing? Explain

  14. Funnel BallDiagram

  15. Funnel Ball • Inferences: • The air blowing through the funnel is moving quickly • Fast moving air exerts less pressure over the surfaces that it passes • This fast moving air creates a low pressure area • The regular air pressure of the room pushes down on the ball stopping it from leaving the funnel

  16. Funnel Ball • Would stronger, faster air flow blow out the ball? • Let’s try the blow dryer!

  17. Funnel Ball • Real life examples • Curve ball in baseball • http://www.youtube.com/watch?v=WhXZ186FNIk

  18. Title Pages • Work on title page sections: • Air takes up space and exerts pressure • Air is fluid and capable of being compressed • Air is composed of different gases • Bernoulli’s principle

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