Million Whys Press logo
Million Whys PressToronto
← Book 30 videos

Book 30, Question 82 · Video

How much water does it take to make a T-shirt or an apple?

Video · 1:53 · Crafty Clover explains, from A Million Whys Book 30

Water goes into making almost everything we use. Growing cotton for one T-shirt can take about 2,700 liters of water, which is what one person might drink in more than three years. An apple takes about 100 liters. Scientists call this virtual water, or hidden water. It reminds us that wasting things wastes water, too, and that reusing is smart.

Read the full answer →

What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. How much water does it take to make a T-shirt or an apple?

The Big Idea

Making things takes water! Even if you can't see it. How much?

In Everything

Step one: In Everything. Water goes into making almost everything we use, from clothes to food to toys. You can't see it in the finished thing, but it was needed along the way.

T-shirts and Apples

Step two: T-shirts and Apples. Growing cotton for one T-shirt can take about 2,700 liters of water, what one person might drink in more than three years. An apple takes about one hundred liters.

Saving Things

Step three: Saving Things. Scientists call this virtual water, or hidden water. It reminds us that wasting things wastes water too, and that reusing is smart.

A Closer Look

Let's take a closer look! 2,700 liters. 100 liters. Lots more. Less water.

Quick Facts

Quick facts! Foods like beef take more water to produce than vegetables. Cotton is thirsty. An apple takes 100 liters. Reusing saves water.

Think Like a Scientist

Now, think like a scientist! List five things you used today. Guess how much water each took to make. Rank them from most to least. Look up a few with a grown-up. Which surprised you?

Outro

Water goes into making almost everything, and scientists call it virtual or hidden water. One cotton T-shirt can take about 2,700 liters and an apple about one hundred liters, so wasting things also wastes water, and reusing is smart. 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!

Why I wrote this