Sink or Float

      4 Comments on Sink or Float

As an Amazon associate, I may earn  from qualifying purchases.

This is a really simple science activity. You can use any items from around the house. This kept Rosebud occupied for quite a while and she was so excited that she was doing a science experiment.

Sink or Float pinWhat I used:

  • Glass bowl,
  • Water,
  • Pompom,
  • Penny,
  • Small plastic lid,
  • Small ball,
  • Piece of tin foil.

Plastic nut floating in water.

Before placing each object in the water, I’d ask Rosebud if she thought they’d sink or float. She guessed correctly on most of them. We talked about how heavier things sunk and lighter things floated. We talked about how the pompom absorbed water. In the end, it was still floating though. We also talked about what each item was made of and whether it was hard or soft.

Craft stick floating in water.

Vocabulary words:

  • Float,
  • Sink,
  • Light,
  • Heavy,
  • Absorb.
  • Toy walrus sinking.


Most of the items floated. The only items that sunk were the penny, the glass rock and the small ball. It was a ball from an old mouse. We will have to try this in the future with different items. Have you tried this with your kids? What are your go to simple science activities? Tell me in the comments.

Rosebud adding objects to the bowl.

All the items in the bowl.

4 thoughts on “Sink or Float

    1. The Rose Post author

      Thank you. I’m glad you found it useful. The kids just love playing with the water if nothing else so it’ll be a hit either way.

    1. The Rose Post author

      That’s what I love about this activity. You can use anything you have on hand and you can do this activity many times if you switch up the items. Thanks for commenting.


Leave a Reply

Your email address will not be published. Required fields are marked *