DISCREPANT EVENTS

DISCREPANT EVENT


A discrepant event is a phenomenon which has a surprising and paradoxical outcome that is not what the observer would normally expect. Discrepant events are occurrences which deny our understanding of the world by presenting unexpected outcomes. these is used to grab the attention of the audience and engage visual learners, particularly young children. It increases logical thinking in children. It creates wonder in minds of the children.

It is surprising
It amazes student because it is contrary to what they would expect to happen
It puzzles the observer and arouses curiosity.


     1.BALLOON INFLATING

Materials required:

  • conical flask
  • acetic acid
  • balloon
  • baking soda

Procedure

  1.  Fill the conical flask with acetic acid.
  2. Place half a spoon of baking soda in the balloon 
  3. Attach the balloon carefully to the flask filled with acetic acid
  4. Hold the balloon upright
  5. Now, hold the balloon with water on the flame. It does not burst.
Reason:

This occurs because, baking soda from the balloon reacts with acetic acid in the flask and liberates carbon dioxide which goes into the balloon and inflates it.


2.Magic Balloon

Materials required:

  • 2 balloons
  • water
  • Candle
  • Matchbox

Procedure

  1. Fill a balloon with some water and blow it.
  2. Blow another balloon without adding any water to it.
  3. Put on the candle.
  4. Hold the balloon without water on the flame. It bursts immediately.
  5. Now, hold the balloon with water on the flame. It does not burst.


Reason:

The reason a balloon filled with air pops when you
 put it over a flame is because the rubber of the balloon gets very hot and weak and then breaks. When you fill a balloon with water instead of air, the water absorbs most of the heat, so the rubber doesn't get very hot.



3.SUPER BAG


Materials required:

  • Zip-lock bag
  • water
  • pencils
  • tray

Procedure:

  1. Fill the zip-lock bag with water.
  2. Insert the pencils in this zip lock bags with the tip of the pencils. Water does not spills out.

Reason:

This zip-lock bags are made up of polymers called as LDPE. That is, Low Density Poly Ethylene. One of the most important property of these polymers is that it is very flexible. Putting the pencil through the polymers simply pushes them to the side. Their flexibility allows them to continue to form a strong seal around the pencil.

4.Standing Near The Wall

Procedure:
  1. Place your left leg exactly parallel and close to the wall.
  2. Stand straight such that your leg, hip and shoulders should touch the wall.
  3. There should be some distance between two legs.
  4. Now, try to move your right leg close to your left leg.
Reason:
When you're standing straight, your centre of gravity is somewhere around your belly button. When you change your body's shape, you shift the centre of gravity a bit. For example, when you move your left leg while your right side is against a wall, you need to shift your centre of gravity over your right foot. You cannot do this without moving the wall.

MAGIC CANDLE

Materials required:

  • 2 candles
  • Matchbox

Procedure:

  1. Light both the candles using matchstick.
  2. Blow off one of the candle.
  3. Immediately, bring the second flame near the smoke of the first one. Relight it.

Reason:

When the candle is lit, the flame makes the 

wax melt. Some of the hot wax vaporizes and 

is carried up into the smoke. The bits of wax 

in the smoke are then caught by the second

 flame that you light in the

smoke and the flame travels down to the 

wick. 


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