Talk About It: Will an Apple Float?
Updated: Oct 9
The big idea: Some things sink and some things float, and we can guess first, then test.
Today's question is a science question: if we put an apple in water, will it sink to the bottom or float on top? Most kids guess it will sink, because apples feel heavy. Then it floats, and they want to try everything in the kitchen.
Questions to ask
"Do you think the apple will sink or float? Why?"
"What happened? Were you right?"
"What else should we test?"
"Does a big apple float? What about a tiny slice?"
"What do you think is inside the apple that helps it float?"
Show it in one minute
Fill a clear bowl with water. Before you drop in the apple, have your child point up (float) or down (sink) to make a guess. Drop it in and watch. Then test a few other things, like a spoon, a grape, a crayon or a toy block, guessing each time. Apples float because they have lots of tiny pockets of air inside.
Keep it going
Take it to bath time. Let your child pick three toys and guess sink or float for each one. The guessing is the real science skill here, not getting the answer right.
Want to learn more?
Easy Science: Sink or Float?, from PBS KIDS for Parents
Fun and Easy Ideas for Water Play With Little Kids, from PBS KIDS for Parents
Why Can Apples Float?, from Best Food Facts
A quick safety note: Always stay right beside your child during any water play, even with a small bowl.
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More for this week: see all our Apple activities, Letter B activities and Number 2 activities.
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