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Book 30, Question 92 · Video

How did people carry water across long distances before pumps?

Video · 1:48 · Crafty Clover explains, from A Million Whys Book 30

Ancient builders made channels and stone bridges called aqueducts that let water flow downhill using gravity. The Romans built hundreds of miles of them, with a slight slope all the way. Some still stand today. Water could run from distant springs into cities for fountains and baths. The idea of using gravity to carry water is still used by modern water systems.

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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. How did people carry water across long distances before pumps?

The Big Idea

Long ago, there were no pumps! But people still moved water far. How?

Downhill Flow

Step one: Downhill Flow. Ancient builders made channels and stone bridges called aqueducts. They let water flow downhill using gravity.

Roman Builders

Step two: Roman Builders. The Romans built hundreds of miles of aqueducts, with a slight slope all the way. Some still stand today, with tall stone arches crossing deep valleys.

Into Cities

Step three: Into Cities. Water could run from distant springs into cities for fountains and baths. Using gravity to carry water is still part of modern water systems.

A Closer Look

Let's take a closer look! Moves water. Cross valleys. Very gentle. In cities.

Quick Facts

Quick facts! Some aqueducts dropped only a few inches in each mile. Romans built many. Some still stand. Gravity does the work.

Think Like a Scientist

Now, think like a scientist! Fold paper into a long channel. Prop one end on a stack of books. Pour a little water in the high end. Catch it in a cup. What happens with a steeper slope?

Outro

Ancient builders made channels and stone bridges called aqueducts that carried water downhill using gravity, with a slight slope all the way. The Romans built hundreds of miles, and some still stand today. 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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