Floating and Sinking

Floating and Sinking

Today we were investigating floating and sinking.

We tried floating a banana, an orange and an apple.  Do you think they floated or sank?

We predicted and then tested each piece of fruit.

We found that oranges float, unless you peel them.  Then they sink.  Orange peels float but will sink if an orange segment is put on top of the peel.  Then it sinks (though the size and shape of the peel might make a difference to the result).  An orange segment on its own will sink.

Bananas float.  Peeled bananas float.  Banana peels float.

Apples float.

Marla in a ball sinks but we think we could get it to float if we make it into a boat shape.  We will try this tomorrow.

Surprisingly, large shells will float if they are on their backs (but will sink the other way around!)

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Today we made passenger boats from balls of marla.  When we got them to float we were able to add passengers and see how many passengers each boat could hold before the boat sank.

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