How do hockey rinks keep the ice frozen when it's warm outside?

What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. How do hockey rinks keep the ice frozen when it's warm outside?

The Big Idea

Hockey rinks stay frozen even on warm days! How do they do it? Let's look under the ice.

Cold Pipes

Step one: Cold Pipes. Under the ice of an arena is a floor with pipes that carry a cold liquid, such as chilled salt water. This pulls heat out of the water above, so it freezes and stays hard.

Thin Ice

Step two: Thin Ice. The ice is only about an inch thick. A white coat of paint under it makes the ice look bright, and the lines are painted under the surface too.

Steady Cold

Step three: Steady Cold. Machines keep the temperature steady all game long. That keeps the ice hard and fast for skaters.

A Closer Look

Let's take a closer look! Under the floor. Stays cold. Bright ice. Steady temps.

Quick Facts

Quick facts! Canada has thousands of indoor arenas. Ice is about an inch thick. Lines painted under ice. Pipes pull heat away.

Think Like a Scientist

Now, think like a scientist! Put a metal tray in the freezer. Pour a thin layer of water on it. Close the door. Check it every few minutes. How quickly does it freeze?

Outro

Hockey rinks stay frozen because pipes under the floor carry chilled salt water that pulls heat out of the water above. The ice is only about an inch thick, with white paint and lines under it, and machines keep it steady. Science is amazing! Remember, every big discovery starts with a small question. Keep looking, keep learning, and keep asking why! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!