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Book 25, Question 52 · Video

Why do water mains sometimes break?

Video · 1:43 · Crafty Clover explains, from A Million Whys Book 25

Water pipes can last a very long time, but not forever. They can rust, get old, or be pushed by moving soil. Very cold weather can make the ground freeze and shift, putting stress on pipes. When a main breaks, water bubbles out of the ground and may flood a street. Crews shut off nearby valves, dig down, and repair the pipe.

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What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why do water mains sometimes break?

The Big Idea

Sometimes water bubbles up out of a street! A water main has broken. Why does that happen?

Getting Old

Step one: Getting Old. Water pipes can last a very long time, but not forever. They can rust, get old, or be pushed by moving soil.

Cold Weather

Step two: Cold Weather. Very cold weather can make the ground freeze and shift. That puts stress on the pipes.

Repairs

Step three: Repairs. When a main breaks, water bubbles out of the ground and may flood a street. Crews shut off nearby valves, dig down, and repair the pipe.

A Closer Look

Let's take a closer look! Rust weakens pipes. Frost shifts the ground. The pipe cracks. Crews repair it.

Quick Facts

Quick facts! Cold snaps cause more water main breaks. Stay away from flooded streets. Valves stop the water. Old pipes get replaced.

Think Like a Scientist

Now, think like a scientist! With a grown-up, fill a plastic bottle three-quarters full of water. Do not use glass. Put it in the freezer overnight. What happened to the bottle? How is this like a pipe in winter?

Outro

Water mains break because pipes get old, rust, or are pushed by moving soil, especially when frozen ground shifts in cold weather. Crews shut valves, dig, and repair them. Science is amazing! Keep wondering and keep exploring! Share what you learned with someone at home, and see what they think! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

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