How Can Radar See Through Ice?

What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. How can radar see through ice?

The Big Idea

Radar can see through ice because radio waves travel through it! The waves bounce off the rock below and come back as echoes. Timing the echoes shows how thick the ice is.

Send Waves

Step one: send waves. Special radar sends radio waves down through the ice. Radio waves can travel through cold ice much farther than light can, so they can reach the bottom.

Catch Echoes

Step two: catch the echoes. The waves bounce off the rock below and come back as echoes. A longer wait for the echo means thicker ice, and a shorter wait means thinner ice.

Map It

Step three: map it. Planes fly back and forth across the ice with radar on board. The echoes reveal mountains and valleys buried under miles of ice.

A Closer Look

Let's take a closer look! The radar sends radio waves downward from a sled or plane. They pass through the thick ice. They bounce off the rock below. Scientists use the echoes to draw a map of the hidden land.

Quick Facts

Quick facts! Radar has shown that some Antarctic ice is nearly 3 miles thick. That is about 6 of the tallest skyscrapers in the world, stacked up! Radar from planes can also see layers inside the ice, like the rings of a tree. Radar needs no light, so it works day and night.

Think Like a Scientist

Now, think like a scientist! Clap in a big empty room and listen for an echo. Time it with a stopwatch. Radar echoes work like sound echoes! Share what you discover with a grown-up.

Outro

Radar echoes help scientists see through miles of ice. Science is amazing! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!