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Book 13, Question 140 · Video

Why Do Window Blinds Control How Much Light Comes In?

Video · 1:49 · Crafty Clover explains, from A Million Whys Book 13

Window blinds control light with slats that can tilt up, down, or close! Tilting the slats changes where the light goes and how much comes in. That lets you make a room brighter or

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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 window blinds control how much light comes in?

The Big Idea

Window blinds control light with slats that can tilt up, down, or close! Tilting the slats changes where the light goes, and how much comes in. You do not have to take the blinds down.

Tilted Up

Step one: tilt up. With the slats tilted up, they bounce sunlight toward the ceiling. The ceiling spreads soft light into the room.

Tilted Down

Step two: tilt down. Tilted down, the slats block the glare and heat of the Sun. That helps when the Sun is low and would shine in your eyes. It also keeps rooms cooler.

Closed

Step three: closed. When the slats are closed, they keep the room dark, which is great for naps and movies. You can control the light without taking the blinds down.

A Closer Look

Let's take a closer look! Sunlight shines on the window. The slats sit in a row. Tilting them changes where the light goes. And the room gets more or less light.

Quick Facts

Quick facts! Window coverings can save energy by keeping rooms cooler on hot days. In winter, they can help keep warmth inside, like a thin extra layer. Light-colored slats reflect more light. Blind cords can be dangerous, so keep them out of reach.

Think Like a Scientist

Now, think like a scientist! Ask a grown-up to tilt the blinds at different angles while you watch the patch of light on the floor. How does it change? Does the room get brighter or dimmer? Keep blind cords out of reach, and let only grown-ups handle them.

Outro

Blinds tilt to steer sunlight, so you control the light in a room. Science is amazing! 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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