Why Does a Calm Lake Show a Mirror Picture and a Windy Lake Does Not?

What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why does a calm lake show a mirror picture and a windy lake does not?

The Big Idea

Still water is flat, so it reflects light in an orderly way and makes a clear, upside-down picture. Wind and ripples tilt the surface into many little slopes. Each slope points a different way, so the reflection breaks into wobbly pieces.

Flat Water

Step one: flat water. A calm lake has a very smooth, flat surface, with no wind to wrinkle it. Smooth surfaces bounce light in an orderly way, just like a mirror.

Clear Picture

Step two: a clear picture. Light from the trees and sky bounces off the flat water to your eyes. You see a clear picture, flipped upside down.

Windy Ripples

Step three: windy ripples. Wind makes ripples, and each ripple has little slopes that point in different directions. The reflection scrambles into wobbly pieces.

A Closer Look

Let's take a closer look! Calm water lies flat. It shows a mirror picture of the sky and trees. Wind makes ripples. The picture breaks into wobbly pieces that dance and shimmer.

Quick Facts

Quick facts! Photographers wake up early to catch lakes at their calmest. Early morning often has the least wind of the whole day. Even a puddle can make a good mirror when it is still. Stay well back from the edge of a lake or pond.

Think Like a Scientist

Now, think like a scientist! After rain, find a still puddle and look at the reflection. Then drop a tiny pebble in, and watch the reflection break up. Watch it slowly come back together. Stay on the pavement, and wash your hands afterward.

Outro

Flat water makes a mirror, and ripples break it. Science is amazing! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!