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Peeled Orange, Unpeeled Orange

Peeled Orange, Unpeeled Orange

Peeled Orange, Unpeeled Orange

A simple experiment - one of my favorites! 

Peeled or Unpeeled Orange - Sink or Float!

Take a clear Bowl, tall glass or a Pitcher for this experiment. You will need Water and 2 oranges – one of them peeled (make sure its still a whole orange).
Fill the bowl/glass with water. Put the peeled orange, kids observe it will sink. Now, put the other orange (the unpeeled one), the kids observe it will float.
Reason: The rind(peel) of the orange has tiny air pores which help it give a lower density then water, and hence it floats. 
Remove the rind (peel) from the orange, the fruit of the orange is denser than water and as a result making it sink. 
Now, place only the rind( the orange peel) in the water and observe will it sink or float? Yes, it will float. 
Kids maybe young to understand this concept of density– but an early exposure with this simple experiments creates a picture memory and the logical reasoning can be enhanced as they grow. 
What is Density? Density is the mass of an object relative to its volume. Objects with a lot of matter in a certain volume have a high density, while objects with a small amount of matter in the same volume have a low density.
Also read comments below from supermom @Kamya Krishnakumar where she beautifully explains this concept of Sink and Float with the life jacket analogy.

Ideas from the class of Teacher Rindala!

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Yours Truly,
Miss K