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Home » Climate Change for Kids » Why don’t penguins freeze? Science Experiment

Why don’t penguins freeze? Science Experiment

Modified: Jan 17, 2025 · Published: Sep 15, 2023 by Emma Vanstone · This post may contain affiliate links · Leave a Comment

Most penguins live in and around Antarctica in the southern hemisphere. This means they have to be able to survive in extreme cold conditions. Penguins have several adaptations that allow them to stay warm when temperatures plummet.

This simple science investigation uses a wax crayon to show how a waxy coating acts as a water-repellent.

Penguin adaptations

  • Penguins produce oil from a gland near their tail which they spread over their feathers. This gives the feathers a waxy coating, allowing them to repel water.
  • Densely packed feathers trap air, which acts as an insulator.
  • A thick layer of blubber.
  • This very simple science activity demonstrates how the waxy coating protects penguins from the extreme cold of their environment.
emperor penguins on the snow

Why don’t penguins freeze?

You’ll need

Penguin printable experiment sheet ( or draw your own )

Wax Crayons

Marker pens / felt tip pens

Colouring pencils

Water

Instructions

Colour one penguin from the printable sheet with wax crayon. This needs to be a thick coating, so go over each area a few times with the crayon.

Leave the second penguin blank. This is the control.

Colour the last two penguins with two other types of pen. Marker pens ( felt tips ) or colouring pencils work well.

Carefully drop five drops of water onto each penguin.

Watch what happens to the water.

Penguin Printable UK Spelling
Penguin Printable US Spelling
Four penguins on a sheet of paper for a science experiment about why penguins don't freeze

The wax crayon will repel the water. You should see beads of water form on the penguin coloured with crayons. The paper should absorb the water for the other three penguins as they don’t have a waterproof coating.

four penguins drawn on paper. One has been coloured with wax crayon, one is blank, one a marker pen and one a colouring pencil. Four water drops have been dripped on each one.
How do penguins stay dry? experiment sheet
How do penguins stay dry experiment write up sheet
Why don’t penguins freeze? Question pack

Threats to penguins

Climate change and the warming of the Earth’s polar regions are a huge threat to penguin populations. The melting of sea ice means penguins are losing their natural habitat.

Fishing – overfishing in Antarctic regions has reduced the food supply for penguins. They are also at risk of getting caught in nets.

What is an adaptation?

Adaptations are features which make an animal or plant well-suited to life in their environment.

Penguin adaptions

  • Heavy, solid bones to allow them to stay underwater.
  • Two layers of feathers to trap air for insulation.
  • A thick layer of blubber for insulation.
  • Streamlined shape for swimming.
  • Strong claws and short legs for gripping on the ice and rocks.
  • Paddle-like wings for swimming in water.

More penguin science activities

Experience first-hand why and how a thick layer of blubber helps keep penguins warm.

Learn about the effects of melting polar ice caps with a hands-on demonstration.

Penguins on the snow for a why don't penguins freeze science experiment

Last Updated on January 17, 2025 by Emma Vanstone

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Safety Notice

Science Sparks ( Wild Sparks Enterprises Ltd ) are not liable for the actions of activity of any person who uses the information in this resource or in any of the suggested further resources. Science Sparks assume no liability with regard to injuries or damage to property that may occur as a result of using the information and carrying out the practical activities contained in this resource or in any of the suggested further resources.

These activities are designed to be carried out by children working with a parent, guardian or other appropriate adult. The adult involved is fully responsible for ensuring that the activities are carried out safely.

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