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Kingswood Primary School

"Opportunity, Enjoyment, Excellence"

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Kingswood Primary School

"Opportunity, Enjoyment, Excellence"




Frozen Sea Science Experiment


You will need:




Selection of small plastic sea creature toys




  1. Fill the bowl two-thirds full with water.
  2. Put in the plastic sea creatures.
  3. Place in the freezer for a few hours until the top layer is frozen but there is still water at the bottom of the bowl.
  4. Remove from the freezer and observe.



In your Busy Book draw a picture of the bowl and the animals when they come out of the freezer and answer the following questions:


Where is the ice?

Is there any water for the sea creatures to live in?

What would happen to the sea creatures if ice didn’t float?



The Science Behind the Experiment – A Guide for Adults

When water freezes into ice it increases in area. This means it become less dense. Ice is less dense than water so it floats on the surface. This allows plants and animals to remain and survive in the liquid water below the ice.