The “Classic” Magician’s Trick How can you make a classic science magic demonstration into one your students will remember? It’s all about the presentation!
The “Classic” Magician’s Trick Shhh! The Secret of… Pull the tablecloth sharply DOWN!...or an example of Inertia on STEROIDS! Inertia
Nickel-Match Challenge 5 cents Remove the match WITHOUT touching the table, match, nickel or glass!
Nickel-Match Challenge Shhh! The Secret of… 5 cents Use Fur & Plastic Tube or ANY static charge combination Hint… You could use a Canadian Coin if you want to add another type of Force… Magnetism!
Mystery Music Tube Why is there no sound produced in the magic mystery tube? Same length, diameter and material… Hmmm…
Mystery Music Tube Shhh! The Secret of… * There are NO ridges INSIDE of a Vacuum Cleaner Hose! The lack of ridges fails to set up a vibrating air column, no standing wave is produced and NO SOUND is heard!
Magic cup When the H 2 O- filled glass is inverted, why is the plastic cover still in place?
Magic cup Shhh! The Secret of… Stretched stocking glued to rim of glass
Discrepant event Challenge The Endless Energy Bottle Draw what is actually inside the bottle to make it perform its trick… OR Draw what could be a reasonably scientific explanation for why the bottle performs its trick.
Shhh! The Secret of… Thirsty bottle PVC tubing glued to inside neck of bottle Hole near top of bottle to allow air inside AFTER inverting. PVC tubing does NOT reach all the way to the bottom of the bottle.
Daily Physics Challenge DISCREPANT EVENT Challenge 1. Two Darts, one REGULAR dart, the other a WEIGHTED Dart, are dropped from the same height at the same time. Which Dart hits the ground first? 2. Two Darts, one REGULAR dart, the other a WEIGHTED Dart, are FIRED HORIZONTALLY from a DART GUN. What will happen to the two darts? 3.Two Darts, one REGULAR dart, the other a WEIGHTED Dart, are now FIRED VERTICALLY DOWNWARD from the SAME DART GUN. Which dart hits the ground first? a)The Regular Dart b)The weighted dart c)It will be a tie
Shhh! The Secret of… The Dart Paradox Lump of clay The weighted dart will STILL accelerate at a slower rate OUT OF THE GUN even if the darts are aim downward!
Why does the ball take so long to travel down the aluminum track? Since the track is NOT attracted to a magnet, what can be the reason? Watch the ball accelerate down the alumuinum track...
Shhh! The Secret of… The “Magic” Track The Neodymium magnet rolls slower down the Aluminum track EVEN THOUGH the magnet is NOT attracted to the track! This is because of “Lenz’s Law”; an electric field is produced by the rolling magnet which in turn produces its own magnetic field that opposes the magnetic field which originally created it.
The “impossible” inertia ring challenge Remove the hoop to allow the wooden dowel to fall into the flask. A classic demo with a twist!
Shhh! The Secret of… The “impossible” inertia ring challenge Hit the “inside” of the flexible ring quickly so that it goes unnoticed by the students! Hoop is cut from a plastic paint pail
Objects will fall SLOWER in air than in a vacuum! Free Fall Vacuum tube
Sliding your finger into the hole presents the illusion of falling slower through air! Shhh! The Secret of… Free Fall Vacuum tube
Without the sail, the Fan Cart moves to the right. When the sail is attached to the cart, what will happen? A. The Fan Cart will move to the right. B.The Fan Cart will move to the left. C.The Fan Cart will not move. DISCREPANT EVENT Challenge ? ?
Shhh! The Secret of… Fan cart “For every Force, there is an equal and opposite Force”… Newton’s 3 rd Law With the “sail” on board & perpendicular to the Force caused by the fan blades, Newton’s 3 rd Law is easily observed. Since the “Wall” AND Fan are both attached to the cart, the equal & opposite forces cause no net motion of the cart.
What happens when the tube is dropped WHILE making a sound? Free Fall zoob tube What happens when the tube is thrown upward WHILE making a sound?
All parts are in Free Fall when the tube is dropped so since no part can drop faster than “g”, the Zoob tube makes no sound! Free Fall zoob tube All parts are in Free Fall when the tube is thrown upward so since each part is being slowed at “g”, the Zoob tube makes no sound! Same acceleration Same deceleration Shhh! The Secret of…
DAILY fizziks CHALLENGE Balloon Black Box Choose only ONE answer! 1.The pink balloon will inflate & the yellow balloon will deflate. 2.The pink balloon will deflate & the yellow balloon will inflate. 3.Both balloons will inflate. 4.Both balloons will deflate. 5.Nothing happens. [Both balloons will stay as they are.]
Shhh! The Secret of… Balloon mystery A larger force is exerted on the air molecules inside the balloon when the balloon is smaller than when it has been slightly inflated.
Daily Fizziks Challenge “Black Box... The Trained Can” Draw what is actually inside the can to make it perform its “trick”... OR Draw what could be a reasonably scientific explanation for why it performs its trick.
Shhh! The Secret of… Trained can As the can rolls, the rubber bands wind up because the weight attached to the rubber bands is heavy. Don’t roll your can too far because the rubber bands will flip the weight!
Since moving charges create magnetic fields, the... E & M Bulb Demo shows the relationship in a unique way! DCAC 1)What will occur when a magnet is held near an unlit bulb filament? 2)What will occur when a magnet is held near a lit bulb wired in DC? 3)What will occur when a magnet is held near a lit bulb wired in AC? Discrepant Lightbulb
Black box challenge By observation only, draw what is in the bottle.