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Home » Education » Homeschool Science » Sink or Float With Lemons and Limes

Sink or Float With Lemons and Limes

March 11, 2013 by Crystal McClean

It’s time for a fun little science lesson.  Will lemon and lime slices sink or float?  In fact, this is something that has perplexed scientists for some time now.  It was when this hit the BBC news over the summer that I thought if it is something of concern to the wider science community, it was definitely something that we should explore as well.

Preschool science, fun with fruit, float or sink activity, lemons and limes, Crystal's Tiny Treasures Chldminding, photo

Lemon & Lime Sink or Float?

The supplies are easy enough to source for this sink or float experiment:

  • Lemon
  • Lime
  • A sharp knife
  • A bowl of water

Preschool science, fun with fruit, float or sink activity, lemons and limes, Crystal's Tiny Treasures Chldminding, photo

Our hypothesis:   We thought we would stick with the thoughts of those higher up in the science field than us and proposed that the lime would sink and the lemon would float.

Our Method:  We cut equal-sized slices from a lime and from a lemon as seen here and Tristan placed them into a bowl of tap water (we used the water from the cold tap).

Preschool science, fun with fruit, float or sink activity, lemons and limes, Crystal's Tiny Treasures Chldminding, photo

Our Observations:  After the slices were gently placed in the bowl of water Tristan could clearly see that the lemon did indeed float, and the lime sank to the bottom of the bowl.

Preschool science, fun with fruit, float or sink activity, lemons and limes, Crystal's Tiny Treasures Chldminding, photo

Our Results:  We concluded that the scientists are correct and that lime slices sink and lemon slices float!

Preschool science, fun with fruit, float or sink activity, lemons and limes, Crystal's Tiny Treasures Chldminding, photo

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Our Discussion:  Although this worked for us, would a change in the water temperature, the size of the slices, or the type of bowl make a difference?

Why do lemons float and limes sink?  When we did this experiment Tristan was too young to understand density, but if you’d like to learn more about the possible reasons why, Steve Spangler has some deeper explanations on his website.

Why not try this out for yourself at home?  And don’t forget to do some baking with the left-over fruit, that could be a whole other science experiment!

READ MORE:   Overcoming Phobias and Folding Origami Bugs

Do you like kitchen science?  We’ve also measured carrot tops for re-growth and made a solar oven.  Click over to our science activities page for more ideas.

Filed Under: Homeschool Science Tagged With: Experiments, Fruit, Kindergarten, Preschool, Primary

About Crystal McClean

I am a Mom, Wife, Home Educator, and Virtual Assistant. We love to have fun together while learning and exploring our environment.

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Comments

  1. Martianne says

    July 25, 2013 at 6:03 pm

    Love this and am going to have to add it to my do-with-kids ideas. Also love your drop down menus. Did you do them yourself or have someone do them. I’d love to do similarly.

    • Crystal McClean says

      July 27, 2013 at 6:43 pm

      Thanks, it’s quite fun (and tasty too!). I’m sure we’ll revisit it again another year.
      Thank you for noticing the drop-downs 🙂 I’ve just about completed filling them. My hubby set them up (I think there may be some sort of a plug-in) but the lists are customised so I have to manually add each item.
      Your blog looks good, and you have a new liker today as well!

  2. iGameMom says

    September 25, 2013 at 7:32 am

    This is really cool. Featuring you this week on iGameMom. Thanks for sharing. https://igamemom.com/creative-science-activities-for-kids-moms-library/

    • Crystal McClean says

      September 26, 2013 at 7:41 pm

      Thank you for featuring us this week! I love your ‘creative’ feature series 🙂

Trackbacks

  1. Creative Science Activities for Kids – Mom’s Library says:
    September 25, 2013 at 7:27 am

    […] result of this Lemon and Lime experiment actually surprised me, and this will be explain why most time Lime is little […]

 
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